699689020 has 24 divisors (see below), whose sum is σ = 1470634704. Its totient is φ = 279630336.

The previous prime is 699688993. The next prime is 699689027. The reversal of 699689020 is 20986996.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699689027) 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, 9004 + ... + 38476.

It is an arithmetic number, because the mean of its divisors is an integer number (61276446).

Almost surely, 2^699689020 is an apocalyptic number.

It is an amenable number.

699689020 is an abundant number, since it is smaller than the sum of its proper divisors (770945684).

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

699689020 is a wasteful number, since it uses less digits than its factorization.

699689020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30669 (or 30667 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 699689020 is about 26451.6354881886. The cubic root of 699689020 is about 887.7724963683.

The spelling of 699689020 in words is "six hundred ninety-nine million, six hundred eighty-nine thousand, twenty".