61918732 has 6 divisors (see below), whose sum is σ = 108357788. Its totient is φ = 30959364.

The previous prime is 61918729. The next prime is 61918751. The reversal of 61918732 is 23781916.

It is a junction number, because it is equal to n+sod(n) for n = 61918691 and 61918700.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7739838 + ... + 7739845.

Almost surely, 2^61918732 is an apocalyptic number.

It is an amenable number.

61918732 is a deficient number, since it is larger than the sum of its proper divisors (46439056).

61918732 is a wasteful number, since it uses less digits than its factorization.

61918732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15479687 (or 15479685 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 61918732 is about 7868.8456586719. The cubic root of 61918732 is about 395.6161552828.

The spelling of 61918732 in words is "sixty-one million, nine hundred eighteen thousand, seven hundred thirty-two".