690898460 has 48 divisors (see below), whose sum is σ = 1689460416. Its totient is φ = 232407552.

The previous prime is 690898459. The next prime is 690898471. The reversal of 690898460 is 64898096.

It is a junction number, because it is equal to n+sod(n) for n = 690898399 and 690898408.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 39137 + ... + 53976.

It is an arithmetic number, because the mean of its divisors is an integer number (35197092).

Almost surely, 2^690898460 is an apocalyptic number.

It is an amenable number.

690898460 is an abundant number, since it is smaller than the sum of its proper divisors (998561956).

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

690898460 is a wasteful number, since it uses less digits than its factorization.

690898460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93182 (or 93180 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 690898460 is about 26284.9474034094. The cubic root of 690898460 is about 884.0389665672.

The spelling of 690898460 in words is "six hundred ninety million, eight hundred ninety-eight thousand, four hundred sixty".