675744420 has 96 divisors (see below), whose sum is σ = 2042062848. Its totient is φ = 165975552.

The previous prime is 675744413. The next prime is 675744449. The reversal of 675744420 is 24447576.

It is a super-2 number, since 2×675744420² = 913261042322272800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621117 + ... + 622203.

It is an arithmetic number, because the mean of its divisors is an integer number (21271488).

Almost surely, 2^675744420 is an apocalyptic number.

675744420 is a gapful number since it is divisible by the number (60) 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 675744420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021031424).

675744420 is an abundant number, since it is smaller than the sum of its proper divisors (1366318428).

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

675744420 is a wasteful number, since it uses less digits than its factorization.

675744420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 675744420 is about 25995.0845353501. The cubic root of 675744420 is about 877.5276766621.

The spelling of 675744420 in words is "six hundred seventy-five million, seven hundred forty-four thousand, four hundred twenty".