61744772 has 6 divisors (see below), whose sum is σ = 108053358. Its totient is φ = 30872384.

The previous prime is 61744751. The next prime is 61744783. The reversal of 61744772 is 27744716.

It can be written as a sum of positive squares in only one way, i.e., 45616516 + 16128256 = 6754^2 + 4016^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7718093 + ... + 7718100.

It is an arithmetic number, because the mean of its divisors is an integer number (18008893).

Almost surely, 2^61744772 is an apocalyptic number.

It is an amenable number.

61744772 is a deficient number, since it is larger than the sum of its proper divisors (46308586).

61744772 is a wasteful number, since it uses less digits than its factorization.

61744772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15436197 (or 15436195 counting only the distinct ones).

The product of its digits is 65856, while the sum is 38.

The square root of 61744772 is about 7857.7841660356. The cubic root of 61744772 is about 395.2453146884.

The spelling of 61744772 in words is "sixty-one million, seven hundred forty-four thousand, seven hundred seventy-two".