3699683640 has 128 divisors (see below), whose sum is σ = 12395592000. Its totient is φ = 981517824.

The previous prime is 3699683639. The next prime is 3699683683. The reversal of 3699683640 is 463869963.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204066 + ... + 221454.

Almost surely, 2^3699683640 is an apocalyptic number.

3699683640 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 3699683640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6197796000).

3699683640 is an abundant number, since it is smaller than the sum of its proper divisors (8695908360).

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

3699683640 is a wasteful number, since it uses less digits than its factorization.

3699683640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17606 (or 17596 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The square root of 3699683640 is about 60825.0247842120. The cubic root of 3699683640 is about 1546.6362907315.

The spelling of 3699683640 in words is "three billion, six hundred ninety-nine million, six hundred eighty-three thousand, six hundred forty".