699124608749 has 4 divisors (see below), whose sum is σ = 798999552864. Its totient is φ = 599249664636.

The previous prime is 699124608673. The next prime is 699124608773. The reversal of 699124608749 is 947806421996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 699124608749 - 2¹² = 699124604653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699124608649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49937472047 + ... + 49937472060.

It is an arithmetic number, because the mean of its divisors is an integer number (199749888216).

Almost surely, 2^699124608749 is an apocalyptic number.

It is an amenable number.

699124608749 is a deficient number, since it is larger than the sum of its proper divisors (99874944115).

699124608749 is an equidigital number, since it uses as much as digits as its factorization.

699124608749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99874944114.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 699124608749 in words is "six hundred ninety-nine billion, one hundred twenty-four million, six hundred eight thousand, seven hundred forty-nine".