64431454 has 16 divisors (see below), whose sum is σ = 101892096. Its totient is φ = 30511800.

The previous prime is 64431443. The next prime is 64431457. The reversal of 64431454 is 45413446.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64431457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8142 + ... + 13969.

It is an arithmetic number, because the mean of its divisors is an integer number (6368256).

Almost surely, 2^64431454 is an apocalyptic number.

64431454 is a deficient number, since it is larger than the sum of its proper divisors (37460642).

64431454 is a wasteful number, since it uses less digits than its factorization.

64431454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22191.

The product of its digits is 23040, while the sum is 31.

The square root of 64431454 is about 8026.9205801478. The cubic root of 64431454 is about 400.8968501467.

The spelling of 64431454 in words is "sixty-four million, four hundred thirty-one thousand, four hundred fifty-four".