61566484 has 24 divisors (see below), whose sum is σ = 123475968. Its totient is φ = 26312160.

The previous prime is 61566473. The next prime is 61566487. The reversal of 61566484 is 48466516.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61566487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7854 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (5144832).

Almost surely, 2^61566484 is an apocalyptic number.

It is an amenable number.

61566484 is an abundant number, since it is smaller than the sum of its proper divisors (61909484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61566484 is a wasteful number, since it uses less digits than its factorization.

61566484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6135 (or 6133 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 61566484 is about 7846.4312907206. The cubic root of 61566484 is about 394.8645243891.

The spelling of 61566484 in words is "sixty-one million, five hundred sixty-six thousand, four hundred eighty-four".