61707490 has 32 divisors (see below), whose sum is σ = 122860080. Its totient is φ = 22166784.

The previous prime is 61707463. The next prime is 61707493. The reversal of 61707490 is 9470716.

It can be written as a sum of positive squares in 8 ways, for example, as 37785609 + 23921881 = 6147^2 + 4891^2 .

It is not an unprimeable number, because it can be changed into a prime (61707493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1605 + ... + 11224.

Almost surely, 2^61707490 is an apocalyptic number.

61707490 is a deficient number, since it is larger than the sum of its proper divisors (61152590).

61707490 is a wasteful number, since it uses less digits than its factorization.

61707490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 61707490 is about 7855.4115105448. The cubic root of 61707490 is about 395.1657478838.

The spelling of 61707490 in words is "sixty-one million, seven hundred seven thousand, four hundred ninety".