64670487 has 16 divisors (see below), whose sum is σ = 101210112. Its totient is φ = 35955360.

The previous prime is 64670467. The next prime is 64670491. The reversal of 64670487 is 78407646.

It is not a de Polignac number, because 64670487 - 2¹² = 64666391 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 40839 + ... + 42392.

It is an arithmetic number, because the mean of its divisors is an integer number (6325632).

Almost surely, 2^64670487 is an apocalyptic number.

64670487 is a deficient number, since it is larger than the sum of its proper divisors (36539625).

64670487 is a wasteful number, since it uses less digits than its factorization.

64670487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83278.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 64670487 is about 8041.7962545690. The cubic root of 64670487 is about 401.3919981503.

The spelling of 64670487 in words is "sixty-four million, six hundred seventy thousand, four hundred eighty-seven".