61951536 has 60 divisors (see below), whose sum is σ = 183584232. Its totient is φ = 19435008.

The previous prime is 61951529. The next prime is 61951543. The reversal of 61951536 is 63515916.

61951536 is a `hidden beast` number, since 619 + 5 + 1 + 5 + 36 = 666.

It is an interprime number because it is at equal distance from previous prime (61951529) and next prime (61951543).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61951536.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10206 + ... + 15101.

Almost surely, 2^61951536 is an apocalyptic number.

It is an amenable number.

61951536 is an abundant number, since it is smaller than the sum of its proper divisors (121632696).

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

61951536 is a wasteful number, since it uses less digits than its factorization.

61951536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25338 (or 25329 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 61951536 is about 7870.9298053025. The cubic root of 61951536 is about 395.6860076025.

The spelling of 61951536 in words is "sixty-one million, nine hundred fifty-one thousand, five hundred thirty-six".