64270434 has 16 divisors (see below), whose sum is σ = 129523680. Its totient is φ = 21259680.

The previous prime is 64270379. The next prime is 64270439. The reversal of 64270434 is 43407246.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64270439) 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, 40099 + ... + 41670.

It is an arithmetic number, because the mean of its divisors is an integer number (8095230).

Almost surely, 2^64270434 is an apocalyptic number.

64270434 is an abundant number, since it is smaller than the sum of its proper divisors (65253246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64270434 is a wasteful number, since it uses less digits than its factorization.

64270434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81905.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 64270434 is about 8016.8843075100. The cubic root of 64270434 is about 400.5626124637.

The spelling of 64270434 in words is "sixty-four million, two hundred seventy thousand, four hundred thirty-four".