690766943 has 8 divisors (see below), whose sum is σ = 709696512. Its totient is φ = 672013816.

The previous prime is 690766903. The next prime is 690766957. The reversal of 690766943 is 349667096.

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

It is a cyclic number.

It is not a de Polignac number, because 690766943 - 2²⁴ = 673989727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690766891 and 690766900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690766903) 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, 36155 + ... + 51852.

It is an arithmetic number, because the mean of its divisors is an integer number (88712064).

Almost surely, 2^690766943 is an apocalyptic number.

690766943 is a deficient number, since it is larger than the sum of its proper divisors (18929569).

690766943 is a wasteful number, since it uses less digits than its factorization.

690766943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88221.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The square root of 690766943 is about 26282.4455292882. The cubic root of 690766943 is about 883.9828688251.

The spelling of 690766943 in words is "six hundred ninety million, seven hundred sixty-six thousand, nine hundred forty-three".