670505862 has 64 divisors (see below), whose sum is σ = 1479715776. Its totient is φ = 201277440.

The previous prime is 670505861. The next prime is 670505863. The reversal of 670505862 is 268505076.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (670505861) and next prime (670505863).

It is a super-2 number, since 2×670505862² = 899156221952726088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 670505862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670505861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 995958 + ... + 996630.

It is an arithmetic number, because the mean of its divisors is an integer number (23120559).

Almost surely, 2^670505862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670505862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739857888).

670505862 is an abundant number, since it is smaller than the sum of its proper divisors (809209914).

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

670505862 is a wasteful number, since it uses less digits than its factorization.

670505862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 670505862 is about 25894.1279443815. The cubic root of 670505862 is about 875.2541789999.

The spelling of 670505862 in words is "six hundred seventy million, five hundred five thousand, eight hundred sixty-two".