64657742 has 8 divisors (see below), whose sum is σ = 97027632. Its totient is φ = 32315200.

The previous prime is 64657727. The next prime is 64657753. The reversal of 64657742 is 24775646.

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 64657742.

It is a congruent number.

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, 767 + ... + 11397.

It is an arithmetic number, because the mean of its divisors is an integer number (12128454).

Almost surely, 2^64657742 is an apocalyptic number.

64657742 is a deficient number, since it is larger than the sum of its proper divisors (32369890).

64657742 is a wasteful number, since it uses less digits than its factorization.

64657742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13674.

The product of its digits is 282240, while the sum is 41.

The square root of 64657742 is about 8041.0037930597. The cubic root of 64657742 is about 401.3656281767.

The spelling of 64657742 in words is "sixty-four million, six hundred fifty-seven thousand, seven hundred forty-two".