670020715 has 16 divisors (see below), whose sum is σ = 989569728. Its totient is φ = 424100736.

The previous prime is 670020709. The next prime is 670020721. The reversal of 670020715 is 517020076.

It is an interprime number because it is at equal distance from previous prime (670020709) and next prime (670020721).

It is a cyclic number.

It is not a de Polignac number, because 670020715 - 2⁵ = 670020683 is a prime.

It is a super-2 number, since 2×670020715² = 897855517058222450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735832 + ... + 736741.

It is an arithmetic number, because the mean of its divisors is an integer number (61848108).

Almost surely, 2^670020715 is an apocalyptic number.

670020715 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

670020715 is a deficient number, since it is larger than the sum of its proper divisors (319549013).

670020715 is a wasteful number, since it uses less digits than its factorization.

670020715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472598.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 670020715 is about 25884.7583531313. The cubic root of 670020715 is about 875.0430302648.

The spelling of 670020715 in words is "six hundred seventy million, twenty thousand, seven hundred fifteen".