690693020 has 48 divisors (see below), whose sum is σ = 1500635136. Its totient is φ = 266760000.

The previous prime is 690693001. The next prime is 690693037. The reversal of 690693020 is 20396096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353045 + ... + 354995.

It is an arithmetic number, because the mean of its divisors is an integer number (31263232).

Almost surely, 2^690693020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690693020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750317568).

690693020 is an abundant number, since it is smaller than the sum of its proper divisors (809942116).

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

690693020 is a wasteful number, since it uses less digits than its factorization.

690693020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562 (or 2560 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 690693020 is about 26281.0391727572. The cubic root of 690693020 is about 883.9513343124.

The spelling of 690693020 in words is "six hundred ninety million, six hundred ninety-three thousand, twenty".