690964344 has 320 divisors, whose sum is σ = 2383603200. Its totient is φ = 182704896.

The previous prime is 690964333. The next prime is 690964357. The reversal of 690964344 is 443469096.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 690964344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3860047 + ... + 3860225.

It is an arithmetic number, because the mean of its divisors is an integer number (7448760).

Almost surely, 2^690964344 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 690964344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191801600).

690964344 is an abundant number, since it is smaller than the sum of its proper divisors (1692638856).

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

690964344 is a wasteful number, since it uses less digits than its factorization.

690964344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 690964344 is about 26286.2006383578. The cubic root of 690964344 is about 884.0670662930.

It can be divided in two parts, 6909 and 64344, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 690964344 in words is "six hundred ninety million, nine hundred sixty-four thousand, three hundred forty-four".