61574164 has 6 divisors (see below), whose sum is σ = 107754794. Its totient is φ = 30787080.

The previous prime is 61574099. The next prime is 61574167. The reversal of 61574164 is 46147516.

It can be written as a sum of positive squares in only one way, i.e., 59413264 + 2160900 = 7708^2 + 1470^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61574167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7696767 + ... + 7696774.

Almost surely, 2^61574164 is an apocalyptic number.

It is an amenable number.

61574164 is a deficient number, since it is larger than the sum of its proper divisors (46180630).

61574164 is a wasteful number, since it uses less digits than its factorization.

61574164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393545 (or 15393543 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 61574164 is about 7846.9206699189. The cubic root of 61574164 is about 394.8809425940.

The spelling of 61574164 in words is "sixty-one million, five hundred seventy-four thousand, one hundred sixty-four".