65412621 has 12 divisors (see below), whose sum is σ = 98593248. Its totient is φ = 41712264.

The previous prime is 65412619. The next prime is 65412643. The reversal of 65412621 is 12621456.

65412621 is a `hidden beast` number, since 654 + 1 + 2 + 6 + 2 + 1 = 666.

It is not a de Polignac number, because 65412621 - 2¹ = 65412619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65412601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157795 + ... + 158208.

It is an arithmetic number, because the mean of its divisors is an integer number (8216104).

Almost surely, 2^65412621 is an apocalyptic number.

It is an amenable number.

65412621 is a deficient number, since it is larger than the sum of its proper divisors (33180627).

65412621 is a wasteful number, since it uses less digits than its factorization.

65412621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316032 (or 316029 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 65412621 is about 8087.8069338975. The cubic root of 65412621 is about 402.9215695426.

It can be divided in two parts, 65 and 412621, that added together give a triangular number (412686 = T₉₀₈).

The spelling of 65412621 in words is "sixty-five million, four hundred twelve thousand, six hundred twenty-one".