690474652 has 24 divisors (see below), whose sum is σ = 1462182624. Its totient is φ = 278510592.

The previous prime is 690474647. The next prime is 690474679. The reversal of 690474652 is 256474096.

It is a happy number.

It is a super-2 number, since 2×690474652² = 953510490109042208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 690474599 and 690474608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724813 + ... + 725764.

It is an arithmetic number, because the mean of its divisors is an integer number (60924276).

Almost surely, 2^690474652 is an apocalyptic number.

It is an amenable number.

690474652 is an abundant number, since it is smaller than the sum of its proper divisors (771707972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690474652 is a wasteful number, since it uses less digits than its factorization.

690474652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450605 (or 1450603 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 690474652 is about 26276.8843663019. The cubic root of 690474652 is about 883.8581684508.

The spelling of 690474652 in words is "six hundred ninety million, four hundred seventy-four thousand, six hundred fifty-two".