64485431 has 2 divisors, whose sum is σ = 64485432. Its totient is φ = 64485430.

The previous prime is 64485427. The next prime is 64485433. The reversal of 64485431 is 13458446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64485431 - 2² = 64485427 is a prime.

It is a super-2 number, since 2×64485431² = 8316741622511522, which contains 22 as substring.

Together with 64485433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64485391 and 64485400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64485433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32242715 + 32242716.

It is an arithmetic number, because the mean of its divisors is an integer number (32242716).

Almost surely, 2^64485431 is an apocalyptic number.

64485431 is a deficient number, since it is larger than the sum of its proper divisors (1).

64485431 is an equidigital number, since it uses as much as digits as its factorization.

64485431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

The square root of 64485431 is about 8030.2821245583. The cubic root of 64485431 is about 401.0087684105.

The spelling of 64485431 in words is "sixty-four million, four hundred eighty-five thousand, four hundred thirty-one".