64699434 has 24 divisors (see below), whose sum is σ = 143443872. Its totient is φ = 21064680.

The previous prime is 64699429. The next prime is 64699441. The reversal of 64699434 is 43499646.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64699434.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41022 + ... + 42569.

It is an arithmetic number, because the mean of its divisors is an integer number (5976828).

Almost surely, 2^64699434 is an apocalyptic number.

64699434 is an abundant number, since it is smaller than the sum of its proper divisors (78744438).

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

64699434 is a wasteful number, since it uses less digits than its factorization.

64699434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83642 (or 83639 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 64699434 is about 8043.5958376835. The cubic root of 64699434 is about 401.4518779169.

The spelling of 64699434 in words is "sixty-four million, six hundred ninety-nine thousand, four hundred thirty-four".