690417969 has 8 divisors (see below), whose sum is σ = 920680992. Its totient is φ = 460216800.

The previous prime is 690417899. The next prime is 690417971. The reversal of 690417969 is 969714096.

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

It is not a de Polignac number, because 690417969 - 2⁸ = 690417713 is a prime.

It is a super-2 number, since 2×690417969² = 953353943836169922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690417989) 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, 28194 + ... + 46644.

It is an arithmetic number, because the mean of its divisors is an integer number (115085124).

Almost surely, 2^690417969 is an apocalyptic number.

It is an amenable number.

690417969 is a deficient number, since it is larger than the sum of its proper divisors (230263023).

690417969 is a wasteful number, since it uses less digits than its factorization.

690417969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30927.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 690417969 is about 26275.8057726114. The cubic root of 690417969 is about 883.8339816573.

The spelling of 690417969 in words is "six hundred ninety million, four hundred seventeen thousand, nine hundred sixty-nine".