690604033 has 4 divisors (see below), whose sum is σ = 789261760. Its totient is φ = 591946308.

The previous prime is 690604021. The next prime is 690604043. The reversal of 690604033 is 330406096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690604033 - 2²¹ = 688506881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 690603986 and 690604004.

It is not an unprimeable number, because it can be changed into a prime (690604043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49328853 + ... + 49328866.

It is an arithmetic number, because the mean of its divisors is an integer number (197315440).

Almost surely, 2^690604033 is an apocalyptic number.

It is an amenable number.

690604033 is a deficient number, since it is larger than the sum of its proper divisors (98657727).

690604033 is an equidigital number, since it uses as much as digits as its factorization.

690604033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98657726.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 690604033 is about 26279.3461296129. The cubic root of 690604033 is about 883.9133707244.

The spelling of 690604033 in words is "six hundred ninety million, six hundred four thousand, thirty-three".