64470623 has 16 divisors (see below), whose sum is σ = 75969600. Its totient is φ = 54684000.

The previous prime is 64470589. The next prime is 64470641. The reversal of 64470623 is 32607446.

It is a de Polignac number, because none of the positive numbers 2^k-64470623 is a prime.

It is a super-2 number, since 2×64470623² = 8312922460016258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64470623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64470823) 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, 33713 + ... + 35573.

It is an arithmetic number, because the mean of its divisors is an integer number (4748100).

Almost surely, 2^64470623 is an apocalyptic number.

64470623 is a deficient number, since it is larger than the sum of its proper divisors (11498977).

64470623 is a wasteful number, since it uses less digits than its factorization.

64470623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 64470623 is about 8029.3600616737. The cubic root of 64470623 is about 400.9780710765.

The spelling of 64470623 in words is "sixty-four million, four hundred seventy thousand, six hundred twenty-three".