699401790 has 80 divisors (see below), whose sum is σ = 1884876048. Its totient is φ = 186084864.

The previous prime is 699401767. The next prime is 699401797. The reversal of 699401790 is 97104996.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699401797) by changing a digit.

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, 544489 + ... + 545771.

Almost surely, 2^699401790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699401790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942438024).

699401790 is an abundant number, since it is smaller than the sum of its proper divisors (1185474258).

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

699401790 is a wasteful number, since it uses less digits than its factorization.

699401790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 699401790 is about 26446.2055879478. The cubic root of 699401790 is about 887.6509996331.

The spelling of 699401790 in words is "six hundred ninety-nine million, four hundred one thousand, seven hundred ninety".