3208628665 has 16 divisors (see below), whose sum is σ = 4289760000. Its totient is φ = 2283896320.

The previous prime is 3208628659. The next prime is 3208628677. The reversal of 3208628665 is 5668268023.

It is not a de Polignac number, because 3208628665 - 2²¹ = 3206531513 is a prime.

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, 618040 + ... + 623209.

It is an arithmetic number, because the mean of its divisors is an integer number (268110000).

Almost surely, 2^3208628665 is an apocalyptic number.

It is an amenable number.

3208628665 is a deficient number, since it is larger than the sum of its proper divisors (1081131335).

3208628665 is a wasteful number, since it uses less digits than its factorization.

3208628665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241312.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 3208628665 is about 56644.7584953807. The cubic root of 3208628665 is about 1474.9359221421.

The spelling of 3208628665 in words is "three billion, two hundred eight million, six hundred twenty-eight thousand, six hundred sixty-five".