690856953 has 8 divisors (see below), whose sum is σ = 921291648. Its totient is φ = 460496784.

The previous prime is 690856951. The next prime is 690856997. The reversal of 690856953 is 359658096.

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

It is not a de Polignac number, because 690856953 - 2¹ = 690856951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 690856896 and 690856905.

It is not an unprimeable number, because it can be changed into a prime (690856951) 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, 8751 + ... + 38187.

It is an arithmetic number, because the mean of its divisors is an integer number (115161456).

Almost surely, 2^690856953 is an apocalyptic number.

It is an amenable number.

690856953 is a deficient number, since it is larger than the sum of its proper divisors (230434695).

690856953 is a wasteful number, since it uses less digits than its factorization.

690856953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37263.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 690856953 is about 26284.1578331892. The cubic root of 690856953 is about 884.0212627885.

The spelling of 690856953 in words is "six hundred ninety million, eight hundred fifty-six thousand, nine hundred fifty-three".