690240416 has 24 divisors (see below), whose sum is σ = 1378054944. Its totient is φ = 340258240.

The previous prime is 690240413. The next prime is 690240431. The reversal of 690240416 is 614042096.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (690240413) 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, 149630 + ... + 154173.

It is an arithmetic number, because the mean of its divisors is an integer number (57418956).

Almost surely, 2^690240416 is an apocalyptic number.

It is an amenable number.

690240416 is a deficient number, since it is larger than the sum of its proper divisors (687814528).

690240416 is a wasteful number, since it uses less digits than its factorization.

690240416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303884 (or 303876 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 690240416 is about 26272.4269149236. The cubic root of 690240416 is about 883.7582107300.

The spelling of 690240416 in words is "six hundred ninety million, two hundred forty thousand, four hundred sixteen".