699145920 has 336 divisors, whose sum is σ = 2717413920. Its totient is φ = 163430400.

The previous prime is 699145919. The next prime is 699145921. The reversal of 699145920 is 29541996.

It is an interprime number because it is at equal distance from previous prime (699145919) and next prime (699145921).

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 (699145921) 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 47 ways as a sum of consecutive naturals, for example, 918340 + ... + 919100.

Almost surely, 2^699145920 is an apocalyptic number.

699145920 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 699145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1358706960).

699145920 is an abundant number, since it is smaller than the sum of its proper divisors (2018268000).

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

699145920 is a wasteful number, since it uses less digits than its factorization.

699145920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 699145920 is about 26441.3675894421. The cubic root of 699145920 is about 887.5427399902.

The spelling of 699145920 in words is "six hundred ninety-nine million, one hundred forty-five thousand, nine hundred twenty".