690793920 has 280 divisors, whose sum is σ = 2544775200. Its totient is φ = 177666048.

The previous prime is 690793897. The next prime is 690793967. The reversal of 690793920 is 29397096.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 39 ways as a sum of consecutive naturals, for example, 751221 + ... + 752139.

Almost surely, 2^690793920 is an apocalyptic number.

690793920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690793920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272387600).

690793920 is an abundant number, since it is smaller than the sum of its proper divisors (1853981280).

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

690793920 is a wasteful number, since it uses less digits than its factorization.

690793920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 690793920 is about 26282.9587375546. The cubic root of 690793920 is about 883.9943762737.

The spelling of 690793920 in words is "six hundred ninety million, seven hundred ninety-three thousand, nine hundred twenty".