3621646402 has 24 divisors (see below), whose sum is σ = 6043202928. Its totient is φ = 1626360120.

The previous prime is 3621646381. The next prime is 3621646409. The reversal of 3621646402 is 2046461263.

It is a super-2 number, since 2×3621646402² = 26232645322239091208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3621646409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70068 + ... + 110239.

It is an arithmetic number, because the mean of its divisors is an integer number (251800122).

Almost surely, 2^3621646402 is an apocalyptic number.

3621646402 is a deficient number, since it is larger than the sum of its proper divisors (2421556526).

3621646402 is a wasteful number, since it uses less digits than its factorization.

3621646402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180414 (or 180403 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 3621646402 is about 60180.1163342179. The cubic root of 3621646402 is about 1535.6845510268.

The spelling of 3621646402 in words is "three billion, six hundred twenty-one million, six hundred forty-six thousand, four hundred two".