61564204 has 24 divisors (see below), whose sum is σ = 116268768. Its totient is φ = 28354560.

The previous prime is 61564201. The next prime is 61564207. The reversal of 61564204 is 40246516.

It is an interprime number because it is at equal distance from previous prime (61564201) and next prime (61564207).

It is not an unprimeable number, because it can be changed into a prime (61564201) 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, 32409 + ... + 34255.

It is an arithmetic number, because the mean of its divisors is an integer number (4844532).

Almost surely, 2^61564204 is an apocalyptic number.

It is an amenable number.

61564204 is a deficient number, since it is larger than the sum of its proper divisors (54704564).

61564204 is a wasteful number, since it uses less digits than its factorization.

61564204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2503 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 61564204 is about 7846.2860003953. The cubic root of 61564204 is about 394.8596499716.

The spelling of 61564204 in words is "sixty-one million, five hundred sixty-four thousand, two hundred four".