64742434 has 8 divisors (see below), whose sum is σ = 99372240. Its totient is φ = 31618356.

The previous prime is 64742423. The next prime is 64742449. The reversal of 64742434 is 43424746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 64742434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376324 + ... + 376495.

It is an arithmetic number, because the mean of its divisors is an integer number (12421530).

Almost surely, 2^64742434 is an apocalyptic number.

64742434 is a deficient number, since it is larger than the sum of its proper divisors (34629806).

64742434 is a wasteful number, since it uses less digits than its factorization.

64742434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752864.

The product of its digits is 64512, while the sum is 34.

The square root of 64742434 is about 8046.2683276162. The cubic root of 64742434 is about 401.5407947581.

The spelling of 64742434 in words is "sixty-four million, seven hundred forty-two thousand, four hundred thirty-four".