61470657 has 20 divisors (see below), whose sum is σ = 97230276. Its totient is φ = 38568960.

The previous prime is 61470641. The next prime is 61470679. The reversal of 61470657 is 75607416.

It can be written as a sum of positive squares in 2 ways, for example, as 46908801 + 14561856 = 6849^2 + 3816^2 .

It is not a de Polignac number, because 61470657 - 2⁴ = 61470641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61470257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20944 + ... + 23697.

Almost surely, 2^61470657 is an apocalyptic number.

It is an amenable number.

61470657 is a deficient number, since it is larger than the sum of its proper divisors (35759619).

61470657 is a wasteful number, since it uses less digits than its factorization.

61470657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44670 (or 44661 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 61470657 is about 7840.3225061218. The cubic root of 61470657 is about 394.6595517642.

The spelling of 61470657 in words is "sixty-one million, four hundred seventy thousand, six hundred fifty-seven".