670823998 has 16 divisors (see below), whose sum is σ = 1121006880. Its totient is φ = 298934496.

The previous prime is 670823977. The next prime is 670823999. The reversal of 670823998 is 899328076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670823999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444090 + ... + 445597.

It is an arithmetic number, because the mean of its divisors is an integer number (70062930).

Almost surely, 2^670823998 is an apocalyptic number.

670823998 is a deficient number, since it is larger than the sum of its proper divisors (450182882).

670823998 is a wasteful number, since it uses less digits than its factorization.

670823998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889731.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 670823998 is about 25900.2702302505. The cubic root of 670823998 is about 875.3925848672.

The spelling of 670823998 in words is "six hundred seventy million, eight hundred twenty-three thousand, nine hundred ninety-eight".