61274624 has 20 divisors (see below), whose sum is σ = 122430594. Its totient is φ = 30637056.

The previous prime is 61274617. The next prime is 61274641. The reversal of 61274624 is 42647216.

It can be written as a sum of positive squares in only one way, i.e., 57274624 + 4000000 = 7568^2 + 2000^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59327 + ... + 60350.

Almost surely, 2^61274624 is an apocalyptic number.

61274624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61274624 is a deficient number, since it is larger than the sum of its proper divisors (61155970).

61274624 is an equidigital number, since it uses as much as digits as its factorization.

61274624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119695 (or 119679 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 61274624 is about 7827.8109328215. The cubic root of 61274624 is about 394.2395753214.

The spelling of 61274624 in words is "sixty-one million, two hundred seventy-four thousand, six hundred twenty-four".