3720654 has 80 divisors (see below), whose sum is σ = 10140768. Its totient is φ = 995328.

The previous prime is 3720649. The next prime is 3720667. The reversal of 3720654 is 4560273.

It is a happy number.

3720654 is a `hidden beast` number, since 3 + 7 + 2 + 0 + 654 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19182 + ... + 19374.

Almost surely, 2^3720654 is an apocalyptic number.

3720654 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3720654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5070384).

3720654 is an abundant number, since it is smaller than the sum of its proper divisors (6420114).

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

3720654 is a wasteful number, since it uses less digits than its factorization.

3720654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3720654 is about 1928.8996863497. The cubic root of 3720654 is about 154.9552975494.

The spelling of 3720654 in words is "three million, seven hundred twenty thousand, six hundred fifty-four".