690623433 has 12 divisors (see below), whose sum is σ = 999089520. Its totient is φ = 459713016.

The previous prime is 690623431. The next prime is 690623441. The reversal of 690623433 is 334326096.

It is not a de Polignac number, because 690623433 - 2¹ = 690623431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690623431) 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 11 ways as a sum of consecutive naturals, for example, 52291 + ... + 64152.

It is an arithmetic number, because the mean of its divisors is an integer number (83257460).

Almost surely, 2^690623433 is an apocalyptic number.

It is an amenable number.

690623433 is a deficient number, since it is larger than the sum of its proper divisors (308466087).

690623433 is a wasteful number, since it uses less digits than its factorization.

690623433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117108 (or 117105 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 690623433 is about 26279.7152381832. The cubic root of 690623433 is about 883.9216474203.

The spelling of 690623433 in words is "six hundred ninety million, six hundred twenty-three thousand, four hundred thirty-three".