61704513 has 24 divisors (see below), whose sum is σ = 96992168. Its totient is φ = 37573632.

The previous prime is 61704499. The next prime is 61704541. The reversal of 61704513 is 31540716.

61704513 is a `hidden beast` number, since 617 + 0 + 45 + 1 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2537649 + 59166864 = 1593^2 + 7692^2 .

It is not a de Polignac number, because 61704513 - 2⁴ = 61704497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61704563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8631 + ... + 14067.

Almost surely, 2^61704513 is an apocalyptic number.

It is an amenable number.

61704513 is a deficient number, since it is larger than the sum of its proper divisors (35287655).

61704513 is a wasteful number, since it uses less digits than its factorization.

61704513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553 (or 5550 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 61704513 is about 7855.2220210507. Note that the first 3 decimals coincide. The cubic root of 61704513 is about 395.1593930239.

The spelling of 61704513 in words is "sixty-one million, seven hundred four thousand, five hundred thirteen".