64345234 has 4 divisors (see below), whose sum is σ = 96517854. Its totient is φ = 32172616.

The previous prime is 64345231. The next prime is 64345247. The reversal of 64345234 is 43254346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43254346 = 2 ⋅21627173.

It can be written as a sum of positive squares in only one way, i.e., 53802225 + 10543009 = 7335^2 + 3247^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64345196 and 64345205.

It is not an unprimeable number, because it can be changed into a prime (64345231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16086307 + ... + 16086310.

Almost surely, 2^64345234 is an apocalyptic number.

64345234 is a deficient number, since it is larger than the sum of its proper divisors (32172620).

64345234 is a wasteful number, since it uses less digits than its factorization.

64345234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32172619.

The product of its digits is 34560, while the sum is 31.

The square root of 64345234 is about 8021.5481049483. The cubic root of 64345234 is about 400.7179481053.

The spelling of 64345234 in words is "sixty-four million, three hundred forty-five thousand, two hundred thirty-four".