670650765 has 32 divisors (see below), whose sum is σ = 1138613760. Its totient is φ = 335913984.

The previous prime is 670650763. The next prime is 670650769. The reversal of 670650765 is 567056076.

It is not a de Polignac number, because 670650765 - 2¹ = 670650763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670650763) 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 31 ways as a sum of consecutive naturals, for example, 127212 + ... + 132378.

It is an arithmetic number, because the mean of its divisors is an integer number (35581680).

Almost surely, 2^670650765 is an apocalyptic number.

It is an amenable number.

670650765 is a deficient number, since it is larger than the sum of its proper divisors (467962995).

670650765 is a wasteful number, since it uses less digits than its factorization.

670650765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 670650765 is about 25896.9257828029. The cubic root of 670650765 is about 875.3172248425.

The spelling of 670650765 in words is "six hundred seventy million, six hundred fifty thousand, seven hundred sixty-five".