65423959 has 4 divisors (see below), whose sum is σ = 66400504. Its totient is φ = 64447416.

The previous prime is 65423951. The next prime is 65423977. The reversal of 65423959 is 95932456.

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 65423959 - 2³ = 65423951 is a prime.

It is a super-2 number, since 2×65423959² = 8560588822467362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65423951) 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, 488172 + ... + 488305.

It is an arithmetic number, because the mean of its divisors is an integer number (16600126).

Almost surely, 2^65423959 is an apocalyptic number.

65423959 is a deficient number, since it is larger than the sum of its proper divisors (976545).

65423959 is an equidigital number, since it uses as much as digits as its factorization.

65423959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976544.

The product of its digits is 291600, while the sum is 43.

The square root of 65423959 is about 8088.5078351943. The cubic root of 65423959 is about 402.9448477253.

It can be divided in two parts, 6542 and 3959, that added together give a palindrome (10501).

The spelling of 65423959 in words is "sixty-five million, four hundred twenty-three thousand, nine hundred fifty-nine".