690790983 has 8 divisors (see below), whose sum is σ = 922213488. Its totient is φ = 459947904.

The previous prime is 690790979. The next prime is 690791009. The reversal of 690790983 is 389097096.

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

It is not a de Polignac number, because 690790983 - 2² = 690790979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690790943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142066 + ... + 146847.

It is an arithmetic number, because the mean of its divisors is an integer number (115276686).

Almost surely, 2^690790983 is an apocalyptic number.

690790983 is a deficient number, since it is larger than the sum of its proper divisors (231422505).

690790983 is a wasteful number, since it uses less digits than its factorization.

690790983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289713.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 690790983 is about 26282.9028647903. The cubic root of 690790983 is about 883.9931234664.

The spelling of 690790983 in words is "six hundred ninety million, seven hundred ninety thousand, nine hundred eighty-three".