670157 has 8 divisors (see below), whose sum is σ = 720000. Its totient is φ = 621504.

The previous prime is 670147. The next prime is 670177. The reversal of 670157 is 751076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670157 - 2⁸ = 669901 is a prime.

It is a super-2 number, since 2×670157² = 898220809298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 670157.

It is not an unprimeable number, because it can be changed into a prime (670147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (90000).

2⁶⁷⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

670157 is a deficient number, since it is larger than the sum of its proper divisors (49843).

670157 is a wasteful number, since it uses less digits than its factorization.

670157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 670157 is about 818.6311745835. The cubic root of 670157 is about 87.5102355373.

The spelling of 670157 in words is "six hundred seventy thousand, one hundred fifty-seven".