647465500 has 48 divisors (see below), whose sum is σ = 1542629088. Its totient is φ = 235440000.

The previous prime is 647465471. The next prime is 647465509. The reversal of 647465500 is 5564746.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 647465500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647465509) 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, 53361 + ... + 64360.

It is an arithmetic number, because the mean of its divisors is an integer number (32138106).

Almost surely, 2^647465500 is an apocalyptic number.

It is an amenable number.

647465500 is an abundant number, since it is smaller than the sum of its proper divisors (895163588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647465500 is a wasteful number, since it uses less digits than its factorization.

647465500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117751 (or 117739 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 647465500 is about 25445.3433853819. The cubic root of 647465500 is about 865.1117500716. Note that the first 3 decimals are identical.

The spelling of 647465500 in words is "six hundred forty-seven million, four hundred sixty-five thousand, five hundred".