61916651 has 8 divisors (see below), whose sum is σ = 63748800. Its totient is φ = 60092928.

The previous prime is 61916639. The next prime is 61916707. The reversal of 61916651 is 15661916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61916651 - 2⁶ = 61916587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61916551) 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, 14750 + ... + 18476.

It is an arithmetic number, because the mean of its divisors is an integer number (7968600).

Almost surely, 2^61916651 is an apocalyptic number.

61916651 is a deficient number, since it is larger than the sum of its proper divisors (1832149).

61916651 is a wasteful number, since it uses less digits than its factorization.

61916651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213.

The product of its digits is 9720, while the sum is 35.

The square root of 61916651 is about 7868.7134272383. The cubic root of 61916651 is about 395.6117232021.

The spelling of 61916651 in words is "sixty-one million, nine hundred sixteen thousand, six hundred fifty-one".