64354631 has 8 divisors (see below), whose sum is σ = 71051904. Its totient is φ = 57798520.

The previous prime is 64354607. The next prime is 64354649. The reversal of 64354631 is 13645346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64354631 - 2¹⁴ = 64338247 is a prime.

It is a super-2 number, since 2×64354631² = 8283037062292322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64354681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34331 + ... + 36156.

It is an arithmetic number, because the mean of its divisors is an integer number (8881488).

Almost surely, 2^64354631 is an apocalyptic number.

64354631 is a deficient number, since it is larger than the sum of its proper divisors (6697273).

64354631 is a wasteful number, since it uses less digits than its factorization.

64354631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70581.

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

The square root of 64354631 is about 8022.1338183802. The cubic root of 64354631 is about 400.7374541512.

Adding to 64354631 its reverse (13645346), we get a palindrome (77999977).

The spelling of 64354631 in words is "sixty-four million, three hundred fifty-four thousand, six hundred thirty-one".