64216407 has 16 divisors (see below), whose sum is σ = 89096192. Its totient is φ = 41096160.

The previous prime is 64216403. The next prime is 64216433. The reversal of 64216407 is 70461246.

It is not a de Polignac number, because 64216407 - 2² = 64216403 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 (64216403) 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, 9093 + ... + 14529.

It is an arithmetic number, because the mean of its divisors is an integer number (5568512).

Almost surely, 2^64216407 is an apocalyptic number.

64216407 is a deficient number, since it is larger than the sum of its proper divisors (24879785).

64216407 is a wasteful number, since it uses less digits than its factorization.

64216407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 64216407 is about 8013.5140231986. The cubic root of 64216407 is about 400.4503407095.

The spelling of 64216407 in words is "sixty-four million, two hundred sixteen thousand, four hundred seven".