61564142 has 16 divisors (see below), whose sum is σ = 97372800. Its totient is φ = 29112120.

The previous prime is 61564133. The next prime is 61564159. The reversal of 61564142 is 24146516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30917 + ... + 32847.

It is an arithmetic number, because the mean of its divisors is an integer number (6085800).

Almost surely, 2^61564142 is an apocalyptic number.

61564142 is a deficient number, since it is larger than the sum of its proper divisors (35808658).

61564142 is a wasteful number, since it uses less digits than its factorization.

61564142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791.

The product of its digits is 5760, while the sum is 29.

The square root of 61564142 is about 7846.2820494805. The cubic root of 61564142 is about 394.8595174200.

The spelling of 61564142 in words is "sixty-one million, five hundred sixty-four thousand, one hundred forty-two".