61860651 has 4 divisors (see below), whose sum is σ = 82480872. Its totient is φ = 41240432.

The previous prime is 61860613. The next prime is 61860679. The reversal of 61860651 is 15606816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61860651 - 2⁶ = 61860587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61860611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10310106 + ... + 10310111.

It is an arithmetic number, because the mean of its divisors is an integer number (20620218).

Almost surely, 2^61860651 is an apocalyptic number.

61860651 is a deficient number, since it is larger than the sum of its proper divisors (20620221).

61860651 is a wasteful number, since it uses less digits than its factorization.

61860651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620220.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 61860651 is about 7865.1542260785. The cubic root of 61860651 is about 395.4924179825.

The spelling of 61860651 in words is "sixty-one million, eight hundred sixty thousand, six hundred fifty-one".