862491368 has 8 divisors (see below), whose sum is σ = 1617171330. Its totient is φ = 431245680.

The previous prime is 862491367. The next prime is 862491389. The reversal of 862491368 is 863194268.

It can be written as a sum of positive squares in only one way, i.e., 761649604 + 100841764 = 27598^2 + 10042^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×862491368² = 1487782719749022848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (862491361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53905703 + ... + 53905718.

Almost surely, 2^862491368 is an apocalyptic number.

It is an amenable number.

862491368 is a deficient number, since it is larger than the sum of its proper divisors (754679962).

862491368 is a wasteful number, since it uses less digits than its factorization.

862491368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107811427 (or 107811423 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 862491368 is about 29368.2033498817. The cubic root of 862491368 is about 951.8859554321.

The spelling of 862491368 in words is "eight hundred sixty-two million, four hundred ninety-one thousand, three hundred sixty-eight".