61064428 has 24 divisors (see below), whose sum is σ = 108824688. Its totient is φ = 29976576.

The previous prime is 61064417. The next prime is 61064431. The reversal of 61064428 is 82446016.

It is a self number, because there is not a number n which added to its sum of digits gives 61064428.

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, 63600 + ... + 64552.

It is an arithmetic number, because the mean of its divisors is an integer number (4534362).

Almost surely, 2^61064428 is an apocalyptic number.

It is an amenable number.

61064428 is a deficient number, since it is larger than the sum of its proper divisors (47760260).

61064428 is a wasteful number, since it uses less digits than its factorization.

61064428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 61064428 is about 7814.3731674396. The cubic root of 61064428 is about 393.7882600598.

The spelling of 61064428 in words is "sixty-one million, sixty-four thousand, four hundred twenty-eight".