64670967 has 20 divisors (see below), whose sum is σ = 97615056. Its totient is φ = 42664320.

The previous prime is 64670939. The next prime is 64670993. The reversal of 64670967 is 76907646.

It is a de Polignac number, because none of the positive numbers 2^k-64670967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64670267) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3742 + ... + 11972.

Almost surely, 2^64670967 is an apocalyptic number.

64670967 is a deficient number, since it is larger than the sum of its proper divisors (32944089).

64670967 is an equidigital number, since it uses as much as digits as its factorization.

64670967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340 (or 8331 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 64670967 is about 8041.8260985923. The cubic root of 64670967 is about 401.3929912241.

The spelling of 64670967 in words is "sixty-four million, six hundred seventy thousand, nine hundred sixty-seven".