670409040 has 160 divisors (see below), whose sum is σ = 2433344256. Its totient is φ = 149483520.

The previous prime is 670409039. The next prime is 670409071. The reversal of 670409040 is 40904076.

670409040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 670408989 and 670409007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64014 + ... + 73746.

Almost surely, 2^670409040 is an apocalyptic number.

670409040 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 670409040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216672128).

670409040 is an abundant number, since it is smaller than the sum of its proper divisors (1762935216).

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

670409040 is a wasteful number, since it uses less digits than its factorization.

670409040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797 (or 9791 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 670409040 is about 25892.2583024347. The cubic root of 670409040 is about 875.2120476558.

The spelling of 670409040 in words is "six hundred seventy million, four hundred nine thousand, forty".