65616963 has 8 divisors (see below), whose sum is σ = 88178688. Its totient is φ = 43399944.

The previous prime is 65616949. The next prime is 65616977. The reversal of 65616963 is 36961656.

It is an interprime number because it is at equal distance from previous prime (65616949) and next prime (65616977).

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

It is not a de Polignac number, because 65616963 - 2⁵ = 65616931 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 (65616913) 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, 85731 + ... + 86492.

It is an arithmetic number, because the mean of its divisors is an integer number (11022336).

Almost surely, 2^65616963 is an apocalyptic number.

65616963 is a deficient number, since it is larger than the sum of its proper divisors (22561725).

65616963 is a wasteful number, since it uses less digits than its factorization.

65616963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172353.

The product of its digits is 174960, while the sum is 42.

The square root of 65616963 is about 8100.4298034117. The cubic root of 65616963 is about 403.3406946421.

The spelling of 65616963 in words is "sixty-five million, six hundred sixteen thousand, nine hundred sixty-three".