862494864 has 480 divisors, whose sum is σ = 3132763776. Its totient is φ = 201277440.

The previous prime is 862494833. The next prime is 862494877. The reversal of 862494864 is 468494268.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16273462 + ... + 16273514.

Almost surely, 2^862494864 is an apocalyptic number.

862494864 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 862494864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566381888).

862494864 is an abundant number, since it is smaller than the sum of its proper divisors (2270268912).

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

862494864 is a wasteful number, since it uses less digits than its factorization.

862494864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 130 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 51.

The square root of 862494864 is about 29368.2628699758. The cubic root of 862494864 is about 951.8872415470.

The spelling of 862494864 in words is "eight hundred sixty-two million, four hundred ninety-four thousand, eight hundred sixty-four".