61488836 has 6 divisors (see below), whose sum is σ = 107605470. Its totient is φ = 30744416.

The previous prime is 61488829. The next prime is 61488859. The reversal of 61488836 is 63888416.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 6728836 = 7400^2 + 2594^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7686101 + ... + 7686108.

It is an arithmetic number, because the mean of its divisors is an integer number (17934245).

Almost surely, 2^61488836 is an apocalyptic number.

It is an amenable number.

61488836 is a deficient number, since it is larger than the sum of its proper divisors (46116634).

61488836 is a wasteful number, since it uses less digits than its factorization.

61488836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15372213 (or 15372211 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 61488836 is about 7841.4817477311. The cubic root of 61488836 is about 394.6984527576.

The spelling of 61488836 in words is "sixty-one million, four hundred eighty-eight thousand, eight hundred thirty-six".