65421632 has 28 divisors (see below), whose sum is σ = 130149600. Its totient is φ = 32628096.

The previous prime is 65421623. The next prime is 65421641. The reversal of 65421632 is 23612456.

It is an interprime number because it is at equal distance from previous prime (65421623) and next prime (65421641).

It is a junction number, because it is equal to n+sod(n) for n = 65421595 and 65421604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30119 + ... + 32217.

It is an arithmetic number, because the mean of its divisors is an integer number (4648200).

Almost surely, 2^65421632 is an apocalyptic number.

It is an amenable number.

65421632 is a deficient number, since it is larger than the sum of its proper divisors (64727968).

65421632 is a wasteful number, since it uses less digits than its factorization.

65421632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2588 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 65421632 is about 8088.3639878532. The cubic root of 65421632 is about 402.9400703533.

The spelling of 65421632 in words is "sixty-five million, four hundred twenty-one thousand, six hundred thirty-two".