690613433 has 4 divisors (see below), whose sum is σ = 720640128. Its totient is φ = 660586740.

The previous prime is 690613409. The next prime is 690613447. The reversal of 690613433 is 334316096.

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 a de Polignac number, because none of the positive numbers 2^k-690613433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690613393 and 690613402.

It is not an unprimeable number, because it can be changed into a prime (690613403) 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, 15013313 + ... + 15013358.

It is an arithmetic number, because the mean of its divisors is an integer number (180160032).

Almost surely, 2^690613433 is an apocalyptic number.

It is an amenable number.

690613433 is a deficient number, since it is larger than the sum of its proper divisors (30026695).

690613433 is a wasteful number, since it uses less digits than its factorization.

690613433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30026694.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 690613433 is about 26279.5249766810. The cubic root of 690613433 is about 883.9173811016.

The spelling of 690613433 in words is "six hundred ninety million, six hundred thirteen thousand, four hundred thirty-three".