690803520 has 336 divisors, whose sum is σ = 2545811520. Its totient is φ = 158146560.

The previous prime is 690803497. The next prime is 690803543. The reversal of 690803520 is 25308096.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (690803497) and next prime (690803543).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2206884 + ... + 2207196.

It is an arithmetic number, because the mean of its divisors is an integer number (7576820).

Almost surely, 2^690803520 is an apocalyptic number.

690803520 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 690803520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272905760).

690803520 is an abundant number, since it is smaller than the sum of its proper divisors (1855008000).

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

690803520 is a wasteful number, since it uses less digits than its factorization.

690803520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 690803520 is about 26283.1413647608. The cubic root of 690803520 is about 883.9984712271.

The spelling of 690803520 in words is "six hundred ninety million, eight hundred three thousand, five hundred twenty".