699688044 has 120 divisors (see below), whose sum is σ = 2011374288. Its totient is φ = 210332160.

The previous prime is 699688043. The next prime is 699688051. The reversal of 699688044 is 440886996.

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

It is not an unprimeable number, because it can be changed into a prime (699688043) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 487552 + ... + 488984.

Almost surely, 2^699688044 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 699688044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005687144).

699688044 is an abundant number, since it is smaller than the sum of its proper divisors (1311686244).

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

699688044 is a wasteful number, since it uses less digits than its factorization.

699688044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 699688044 is about 26451.6170394175. The cubic root of 699688044 is about 887.7720835819.

The spelling of 699688044 in words is "six hundred ninety-nine million, six hundred eighty-eight thousand, forty-four".