65006431 has 4 divisors (see below), whose sum is σ = 74293072. Its totient is φ = 55719792.

The previous prime is 65006413. The next prime is 65006471. The reversal of 65006431 is 13460056.

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 65006431 - 2⁵ = 65006399 is a prime.

It is a super-2 number, since 2×65006431² = 8451672142715522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65006396 and 65006405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65006471) 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, 4643310 + ... + 4643323.

It is an arithmetic number, because the mean of its divisors is an integer number (18573268).

Almost surely, 2^65006431 is an apocalyptic number.

65006431 is a deficient number, since it is larger than the sum of its proper divisors (9286641).

65006431 is an equidigital number, since it uses as much as digits as its factorization.

65006431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9286640.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 65006431 is about 8062.6565721231. The cubic root of 65006431 is about 402.0858355690.

Adding to 65006431 its reverse (13460056), we get a palindrome (78466487).

The spelling of 65006431 in words is "sixty-five million, six thousand, four hundred thirty-one".