3547494720 has 672 divisors, whose sum is σ = 16124749056. Its totient is φ = 693043200.

The previous prime is 3547494719. The next prime is 3547494721. The reversal of 3547494720 is 274947453.

3547494720 is a `hidden beast` number, since 3 + 547 + 49 + 47 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (3547494719) and next prime (3547494721).

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3547494721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3769450 + ... + 3770390.

Almost surely, 2^3547494720 is an apocalyptic number.

3547494720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3547494720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8062374528).

3547494720 is an abundant number, since it is smaller than the sum of its proper divisors (12577254336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3547494720 is a wasteful number, since it uses less digits than its factorization.

3547494720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 3547494720 is about 59560.8488858243. The cubic root of 3547494720 is about 1525.1313648372.

The spelling of 3547494720 in words is "three billion, five hundred forty-seven million, four hundred ninety-four thousand, seven hundred twenty".