862740864 has 96 divisors (see below), whose sum is σ = 2516880600. Its totient is φ = 283613184.

The previous prime is 862740841. The next prime is 862740869. The reversal of 862740864 is 468047268.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862740869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78967 + ... + 89225.

Almost surely, 2^862740864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 862740864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1258440300).

862740864 is an abundant number, since it is smaller than the sum of its proper divisors (1654139736).

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

862740864 is a wasteful number, since it uses less digits than its factorization.

862740864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10352 (or 10337 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 862740864 is about 29372.4507659814. The cubic root of 862740864 is about 951.9777317485.

The spelling of 862740864 in words is "eight hundred sixty-two million, seven hundred forty thousand, eight hundred sixty-four".