61157672 has 8 divisors (see below), whose sum is σ = 114670650. Its totient is φ = 30578832.

The previous prime is 61157641. The next prime is 61157693. The reversal of 61157672 is 27675116.

It can be written as a sum of positive squares in only one way, i.e., 58767556 + 2390116 = 7666^2 + 1546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3822347 + ... + 3822362.

Almost surely, 2^61157672 is an apocalyptic number.

It is an amenable number.

61157672 is a deficient number, since it is larger than the sum of its proper divisors (53512978).

61157672 is a wasteful number, since it uses less digits than its factorization.

61157672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644715 (or 7644711 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 61157672 is about 7820.3370771342. The cubic root of 61157672 is about 393.9885933809.

The spelling of 61157672 in words is "sixty-one million, one hundred fifty-seven thousand, six hundred seventy-two".