65364431 has 4 divisors (see below), whose sum is σ = 71306664. Its totient is φ = 59422200.

The previous prime is 65364407. The next prime is 65364433. The reversal of 65364431 is 13446356.

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 65364431 - 2¹⁴ = 65348047 is a prime.

It is a super-2 number, since 2×65364431² = 8545017679907522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65364433) 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, 2971100 + ... + 2971121.

It is an arithmetic number, because the mean of its divisors is an integer number (17826666).

Almost surely, 2^65364431 is an apocalyptic number.

65364431 is a deficient number, since it is larger than the sum of its proper divisors (5942233).

65364431 is a wasteful number, since it uses less digits than its factorization.

65364431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942232.

The product of its digits is 25920, while the sum is 32.

The square root of 65364431 is about 8084.8272090379. The cubic root of 65364431 is about 402.8226000559.

The spelling of 65364431 in words is "sixty-five million, three hundred sixty-four thousand, four hundred thirty-one".