862656540 has 48 divisors (see below), whose sum is σ = 2471618688. Its totient is φ = 224691264.

The previous prime is 862656527. The next prime is 862656541. The reversal of 862656540 is 45656268.

It is a junction number, because it is equal to n+sod(n) for n = 862656492 and 862656501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862656541) 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, 164602 + ... + 169761.

It is an arithmetic number, because the mean of its divisors is an integer number (51492056).

Almost surely, 2^862656540 is an apocalyptic number.

It is an amenable number.

862656540 is an abundant number, since it is smaller than the sum of its proper divisors (1608962148).

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

862656540 is a wasteful number, since it uses less digits than its factorization.

862656540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334418 (or 334416 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 862656540 is about 29371.0153042077. The cubic root of 862656540 is about 951.9467154109.

The spelling of 862656540 in words is "eight hundred sixty-two million, six hundred fifty-six thousand, five hundred forty".