61228564 has 12 divisors (see below), whose sum is σ = 112789600. Its totient is φ = 29002968.

The previous prime is 61228547. The next prime is 61228571. The reversal of 61228564 is 46582216.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402744 + ... + 402895.

Almost surely, 2^61228564 is an apocalyptic number.

It is an amenable number.

61228564 is a deficient number, since it is larger than the sum of its proper divisors (51561036).

61228564 is a wasteful number, since it uses less digits than its factorization.

61228564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805662 (or 805660 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 61228564 is about 7824.8683056011. The cubic root of 61228564 is about 394.1407675524.

The spelling of 61228564 in words is "sixty-one million, two hundred twenty-eight thousand, five hundred sixty-four".