3642656605 has 16 divisors (see below), whose sum is σ = 5025565440. Its totient is φ = 2482860672.

The previous prime is 3642656597. The next prime is 3642656627. The reversal of 3642656605 is 5066562463.

It is a cyclic number.

It is not a de Polignac number, because 3642656605 - 2³ = 3642656597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305760 + ... + 317449.

It is an arithmetic number, because the mean of its divisors is an integer number (314097840).

Almost surely, 2^3642656605 is an apocalyptic number.

3642656605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3642656605 is a deficient number, since it is larger than the sum of its proper divisors (1382908835).

3642656605 is a wasteful number, since it uses less digits than its factorization.

3642656605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623388.

The product of its (nonzero) digits is 777600, while the sum is 43.

The square root of 3642656605 is about 60354.4248999193. The cubic root of 3642656605 is about 1538.6484747966.

The spelling of 3642656605 in words is "three billion, six hundred forty-two million, six hundred fifty-six thousand, six hundred five".