61513672 has 32 divisors (see below), whose sum is σ = 129888000. Its totient is φ = 27057600.

The previous prime is 61513649. The next prime is 61513687. The reversal of 61513672 is 27631516.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 8547 + ... + 14002.

It is an arithmetic number, because the mean of its divisors is an integer number (4059000).

Almost surely, 2^61513672 is an apocalyptic number.

61513672 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61513672 is an abundant number, since it is smaller than the sum of its proper divisors (68374328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61513672 is a wasteful number, since it uses less digits than its factorization.

61513672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22597 (or 22593 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 61513672 is about 7843.0652171202. The cubic root of 61513672 is about 394.7515865831.

The spelling of 61513672 in words is "sixty-one million, five hundred thirteen thousand, six hundred seventy-two".