64670407 has 8 divisors (see below), whose sum is σ = 66417120. Its totient is φ = 62931840.

The previous prime is 64670399. The next prime is 64670429. The reversal of 64670407 is 70407646.

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 64670407 - 2³ = 64670399 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 (64670447) 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, 16203 + ... + 19795.

It is an arithmetic number, because the mean of its divisors is an integer number (8302140).

Almost surely, 2^64670407 is an apocalyptic number.

64670407 is a deficient number, since it is larger than the sum of its proper divisors (1746713).

64670407 is a wasteful number, since it uses less digits than its factorization.

64670407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 64670407 is about 8041.7912805544. The cubic root of 64670407 is about 401.3918326376.

The spelling of 64670407 in words is "sixty-four million, six hundred seventy thousand, four hundred seven".