61872963 has 4 divisors (see below), whose sum is σ = 82497288. Its totient is φ = 41248640.

The previous prime is 61872947. The next prime is 61872997. The reversal of 61872963 is 36927816.

It is a happy number.

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 61872963 - 2⁴ = 61872947 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61872913) 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, 10312158 + ... + 10312163.

It is an arithmetic number, because the mean of its divisors is an integer number (20624322).

Almost surely, 2^61872963 is an apocalyptic number.

61872963 is a deficient number, since it is larger than the sum of its proper divisors (20624325).

61872963 is a wasteful number, since it uses less digits than its factorization.

61872963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20624324.

The product of its digits is 108864, while the sum is 42.

The square root of 61872963 is about 7865.9368799908. The cubic root of 61872963 is about 395.5186542602.

It can be divided in two parts, 61872 and 963, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 61872963 in words is "sixty-one million, eight hundred seventy-two thousand, nine hundred sixty-three".