61604686701 has 32 divisors (see below), whose sum is σ = 91718640000. Its totient is φ = 40866436224.

The previous prime is 61604686681. The next prime is 61604686739. The reversal of 61604686701 is 10768640616.

61604686701 is a `hidden beast` number, since 61 + 60 + 468 + 6 + 70 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-61604686701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61604686001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15027150 + ... + 15031248.

It is an arithmetic number, because the mean of its divisors is an integer number (2866207500).

Almost surely, 2^61604686701 is an apocalyptic number.

It is an amenable number.

61604686701 is a deficient number, since it is larger than the sum of its proper divisors (30113953299).

61604686701 is a wasteful number, since it uses less digits than its factorization.

61604686701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730 (or 6724 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 61604686701 in words is "sixty-one billion, six hundred four million, six hundred eighty-six thousand, seven hundred one".