699111945 has 64 divisors (see below), whose sum is σ = 1444608000. Its totient is φ = 314152128.

The previous prime is 699111899. The next prime is 699111947. The reversal of 699111945 is 549111996.

It is not a de Polignac number, because 699111945 - 2¹¹ = 699109897 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 699111945.

It is not an unprimeable number, because it can be changed into a prime (699111947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49486 + ... + 62024.

It is an arithmetic number, because the mean of its divisors is an integer number (22572000).

Almost surely, 2^699111945 is an apocalyptic number.

It is an amenable number.

699111945 is an abundant number, since it is smaller than the sum of its proper divisors (745496055).

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

699111945 is a wasteful number, since it uses less digits than its factorization.

699111945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12619 (or 12613 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 699111945 is about 26440.7251224319. The cubic root of 699111945 is about 887.5283630425.

The spelling of 699111945 in words is "six hundred ninety-nine million, one hundred eleven thousand, nine hundred forty-five".