61731244 has 24 divisors (see below), whose sum is σ = 111637008. Its totient is φ = 29845440.

The previous prime is 61731223. The next prime is 61731251. The reversal of 61731244 is 44213716.

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, 24399 + ... + 26809.

It is an arithmetic number, because the mean of its divisors is an integer number (4651542).

Almost surely, 2^61731244 is an apocalyptic number.

It is an amenable number.

61731244 is a deficient number, since it is larger than the sum of its proper divisors (49905764).

61731244 is a wasteful number, since it uses less digits than its factorization.

61731244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625 (or 2623 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 61731244 is about 7856.9233164134. The cubic root of 61731244 is about 395.2164470937.

The spelling of 61731244 in words is "sixty-one million, seven hundred thirty-one thousand, two hundred forty-four".