61544464 has 10 divisors (see below), whose sum is σ = 119242430. Its totient is φ = 30772224.

The previous prime is 61544459. The next prime is 61544489. The reversal of 61544464 is 46444516.

It can be written as a sum of positive squares in only one way, i.e., 60528400 + 1016064 = 7780^2 + 1008^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1923249 + ... + 1923280.

It is an arithmetic number, because the mean of its divisors is an integer number (11924243).

Almost surely, 2^61544464 is an apocalyptic number.

It is an amenable number.

61544464 is a deficient number, since it is larger than the sum of its proper divisors (57697966).

61544464 is a wasteful number, since it uses less digits than its factorization.

61544464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846537 (or 3846531 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 61544464 is about 7845.0279795549. The cubic root of 61544464 is about 394.8174427462.

The spelling of 61544464 in words is "sixty-one million, five hundred forty-four thousand, four hundred sixty-four".