3693721604 has 6 divisors (see below), whose sum is σ = 6464012814. Its totient is φ = 1846860800.

The previous prime is 3693721571. The next prime is 3693721607. The reversal of 3693721604 is 4061273963.

It can be written as a sum of positive squares in only one way, i.e., 2376757504 + 1316964100 = 48752^2 + 36290^2 .

It is not an unprimeable number, because it can be changed into a prime (3693721607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461715197 + ... + 461715204.

It is an arithmetic number, because the mean of its divisors is an integer number (1077335469).

Almost surely, 2^3693721604 is an apocalyptic number.

It is an amenable number.

3693721604 is a deficient number, since it is larger than the sum of its proper divisors (2770291210).

3693721604 is a wasteful number, since it uses less digits than its factorization.

3693721604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923430405 (or 923430403 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 3693721604 is about 60775.9952941949. The cubic root of 3693721604 is about 1545.8050431758.

The spelling of 3693721604 in words is "three billion, six hundred ninety-three million, seven hundred twenty-one thousand, six hundred four".