64670255 has 8 divisors (see below), whose sum is σ = 83573952. Its totient is φ = 47756448.

The previous prime is 64670251. The next prime is 64670267. The reversal of 64670255 is 55207646.

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

It is a cyclic number.

It is not a de Polignac number, because 64670255 - 2² = 64670251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64670251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497399 + ... + 497528.

It is an arithmetic number, because the mean of its divisors is an integer number (10446744).

Almost surely, 2^64670255 is an apocalyptic number.

64670255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64670255 is a deficient number, since it is larger than the sum of its proper divisors (18903697).

64670255 is a wasteful number, since it uses less digits than its factorization.

64670255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994945.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 64670255 is about 8041.7818299180. The cubic root of 64670255 is about 401.3915181629.

The spelling of 64670255 in words is "sixty-four million, six hundred seventy thousand, two hundred fifty-five".