690869088 has 480 divisors, whose sum is σ = 2612554560. Its totient is φ = 174182400.

The previous prime is 690869087. The next prime is 690869149. The reversal of 690869088 is 880968096.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690869083) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6840238 + ... + 6840338.

It is an arithmetic number, because the mean of its divisors is an integer number (5442822).

Almost surely, 2^690869088 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 690869088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306277280).

690869088 is an abundant number, since it is smaller than the sum of its proper divisors (1921685472).

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

690869088 is a wasteful number, since it uses less digits than its factorization.

690869088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 690869088 is about 26284.3886746487. The cubic root of 690869088 is about 884.0264387444.

The spelling of 690869088 in words is "six hundred ninety million, eight hundred sixty-nine thousand, eighty-eight".