64100434 has 4 divisors (see below), whose sum is σ = 96150654. Its totient is φ = 32050216.

The previous prime is 64100429. The next prime is 64100453. The reversal of 64100434 is 43400146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43400146 = 2 ⋅21700073.

It can be written as a sum of positive squares in only one way, i.e., 42968025 + 21132409 = 6555^2 + 4597^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16025107 + ... + 16025110.

Almost surely, 2^64100434 is an apocalyptic number.

64100434 is a deficient number, since it is larger than the sum of its proper divisors (32050220).

64100434 is a wasteful number, since it uses less digits than its factorization.

64100434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32050219.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 64100434 is about 8006.2746642868. The cubic root of 64100434 is about 400.2091281445.

The spelling of 64100434 in words is "sixty-four million, one hundred thousand, four hundred thirty-four".