670550657 has 8 divisors (see below), whose sum is σ = 776044800. Its totient is φ = 567481824.

The previous prime is 670550633. The next prime is 670550689. The reversal of 670550657 is 756055076.

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

It is not a de Polignac number, because 670550657 - 2¹² = 670546561 is a prime.

It is a super-3 number, since 3×670550657³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670550957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605732 + ... + 606837.

It is an arithmetic number, because the mean of its divisors is an integer number (97005600).

Almost surely, 2^670550657 is an apocalyptic number.

It is an amenable number.

670550657 is a deficient number, since it is larger than the sum of its proper divisors (105494143).

670550657 is a wasteful number, since it uses less digits than its factorization.

670550657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212655.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 670550657 is about 25894.9928943802. The cubic root of 670550657 is about 875.2736698252.

The spelling of 670550657 in words is "six hundred seventy million, five hundred fifty thousand, six hundred fifty-seven".