64470705 has 32 divisors (see below), whose sum is σ = 116941440. Its totient is φ = 30067200.

The previous prime is 64470701. The next prime is 64470709. The reversal of 64470705 is 50707446.

It is an interprime number because it is at equal distance from previous prime (64470701) and next prime (64470709).

It is not a de Polignac number, because 64470705 - 2² = 64470701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64470701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4996 + ... + 12405.

It is an arithmetic number, because the mean of its divisors is an integer number (3654420).

Almost surely, 2^64470705 is an apocalyptic number.

64470705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64470705 is a deficient number, since it is larger than the sum of its proper divisors (52470735).

64470705 is a wasteful number, since it uses less digits than its factorization.

64470705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17441.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 64470705 is about 8029.3651679320. The cubic root of 64470705 is about 400.9782410774.

The spelling of 64470705 in words is "sixty-four million, four hundred seventy thousand, seven hundred five".