64123454 has 4 divisors (see below), whose sum is σ = 96185184. Its totient is φ = 32061726.

The previous prime is 64123453. The next prime is 64123457. The reversal of 64123454 is 45432146.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×64123454² = 8223634705780232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64123453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16030862 + ... + 16030865.

It is an arithmetic number, because the mean of its divisors is an integer number (24046296).

Almost surely, 2^64123454 is an apocalyptic number.

64123454 is a deficient number, since it is larger than the sum of its proper divisors (32061730).

64123454 is a wasteful number, since it uses less digits than its factorization.

64123454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32061729.

The product of its digits is 11520, while the sum is 29.

The square root of 64123454 is about 8007.7121576640. The cubic root of 64123454 is about 400.2570306361.

The spelling of 64123454 in words is "sixty-four million, one hundred twenty-three thousand, four hundred fifty-four".