670416840 has 96 divisors (see below), whose sum is σ = 2214646200. Its totient is φ = 175841280.

The previous prime is 670416833. The next prime is 670416869. The reversal of 670416840 is 48614076.

It can be written as a sum of positive squares in 4 ways, for example, as 122014116 + 548402724 = 11046^2 + 23418^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 670416795 and 670416804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6696 + ... + 37224.

Almost surely, 2^670416840 is an apocalyptic number.

670416840 is a gapful number since it is divisible by the number (60) 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 670416840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107323100).

670416840 is an abundant number, since it is smaller than the sum of its proper divisors (1544229360).

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

670416840 is a wasteful number, since it uses less digits than its factorization.

670416840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30607 (or 30600 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 670416840 is about 25892.4089261698. The cubic root of 670416840 is about 875.2154419157.

The spelling of 670416840 in words is "six hundred seventy million, four hundred sixteen thousand, eight hundred forty".