645562676476 has 24 divisors (see below), whose sum is σ = 1160410849920. Its totient is φ = 314132807472.

The previous prime is 645562676443. The next prime is 645562676489. The reversal of 645562676476 is 674676265546.

645562676476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14488696 + ... + 14533183.

It is an arithmetic number, because the mean of its divisors is an integer number (48350452080).

Almost surely, 2^645562676476 is an apocalyptic number.

It is an amenable number.

645562676476 is a deficient number, since it is larger than the sum of its proper divisors (514848173444).

645562676476 is a wasteful number, since it uses less digits than its factorization.

645562676476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29022033 (or 29022031 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 64.

The spelling of 645562676476 in words is "six hundred forty-five billion, five hundred sixty-two million, six hundred seventy-six thousand, four hundred seventy-six".