64340434 has 16 divisors (see below), whose sum is σ = 97822080. Its totient is φ = 31735600.

The previous prime is 64340431. The next prime is 64340449. The reversal of 64340434 is 43404346.

It is not an unprimeable number, because it can be changed into a prime (64340431) 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, 89127 + ... + 89845.

It is an arithmetic number, because the mean of its divisors is an integer number (6113880).

Almost surely, 2^64340434 is an apocalyptic number.

64340434 is a deficient number, since it is larger than the sum of its proper divisors (33481646).

64340434 is a wasteful number, since it uses less digits than its factorization.

64340434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 64340434 is about 8021.2489052516. The cubic root of 64340434 is about 400.7079836585.

The spelling of 64340434 in words is "sixty-four million, three hundred forty thousand, four hundred thirty-four".