64216370 has 8 divisors (see below), whose sum is σ = 115589484. Its totient is φ = 25686544.

The previous prime is 64216363. The next prime is 64216387. The reversal of 64216370 is 7361246.

It can be written as a sum of positive squares in 2 ways, for example, as 62900761 + 1315609 = 7931^2 + 1147^2 .

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

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, 3210809 + ... + 3210828.

Almost surely, 2^64216370 is an apocalyptic number.

64216370 is a deficient number, since it is larger than the sum of its proper divisors (51373114).

64216370 is a wasteful number, since it uses less digits than its factorization.

64216370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421644.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 64216370 is about 8013.5117145980. The cubic root of 64216370 is about 400.4502637994.

The spelling of 64216370 in words is "sixty-four million, two hundred sixteen thousand, three hundred seventy".