867966645 has 128 divisors (see below), whose sum is σ = 1838592000. Its totient is φ = 346477824.

The previous prime is 867966623. The next prime is 867966647. The reversal of 867966645 is 546669768.

It is a happy number.

It is not a de Polignac number, because 867966645 - 2⁶ = 867966581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867966647) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1270474 + ... + 1271156.

It is an arithmetic number, because the mean of its divisors is an integer number (14364000).

Almost surely, 2^867966645 is an apocalyptic number.

It is an amenable number.

867966645 is an abundant number, since it is smaller than the sum of its proper divisors (970625355).

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

867966645 is a wasteful number, since it uses less digits than its factorization.

867966645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 730 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The square root of 867966645 is about 29461.2736486392. The cubic root of 867966645 is about 953.8959656517.

The spelling of 867966645 in words is "eight hundred sixty-seven million, nine hundred sixty-six thousand, six hundred forty-five".