3696861408 has 24 divisors (see below), whose sum is σ = 9704261448. Its totient is φ = 1232287104.

The previous prime is 3696861379. The next prime is 3696861409. The reversal of 3696861408 is 8041686963.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3696861409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19254391 + ... + 19254582.

It is an arithmetic number, because the mean of its divisors is an integer number (404344227).

Almost surely, 2^3696861408 is an apocalyptic number.

It is an amenable number.

3696861408 is an abundant number, since it is smaller than the sum of its proper divisors (6007400040).

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

3696861408 is a wasteful number, since it uses less digits than its factorization.

3696861408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38508986 (or 38508978 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 3696861408 is about 60801.8207622107. The cubic root of 3696861408 is about 1546.2429168436.

The spelling of 3696861408 in words is "three billion, six hundred ninety-six million, eight hundred sixty-one thousand, four hundred eight".