61987692 has 24 divisors (see below), whose sum is σ = 155764336. Its totient is φ = 19073088.

The previous prime is 61987657. The next prime is 61987697. The reversal of 61987692 is 29678916.

It is not an unprimeable number, because it can be changed into a prime (61987697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198523 + ... + 198834.

Almost surely, 2^61987692 is an apocalyptic number.

It is an amenable number.

61987692 is an abundant number, since it is smaller than the sum of its proper divisors (93776644).

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

61987692 is a wasteful number, since it uses less digits than its factorization.

61987692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397377 (or 397375 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 61987692 is about 7873.2262764384. The cubic root of 61987692 is about 395.7629690574.

The spelling of 61987692 in words is "sixty-one million, nine hundred eighty-seven thousand, six hundred ninety-two".