64242770 has 8 divisors (see below), whose sum is σ = 115637004. Its totient is φ = 25697104.

The previous prime is 64242751. The next prime is 64242791. The reversal of 64242770 is 7724246.

It can be written as a sum of positive squares in 2 ways, for example, as 63568729 + 674041 = 7973^2 + 821^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3212129 + ... + 3212148.

Almost surely, 2^64242770 is an apocalyptic number.

64242770 is a deficient number, since it is larger than the sum of its proper divisors (51394234).

64242770 is a wasteful number, since it uses less digits than its factorization.

64242770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424284.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 64242770 is about 8015.1587632436. The cubic root of 64242770 is about 400.5051326673.

The spelling of 64242770 in words is "sixty-four million, two hundred forty-two thousand, seven hundred seventy".