698687949 has 8 divisors (see below), whose sum is σ = 932264032. Its totient is φ = 465451920.

The previous prime is 698687939. The next prime is 698687999. The reversal of 698687949 is 949786896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 698687949 - 2⁴ = 698687933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 698687949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698687939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80179 + ... + 88464.

It is an arithmetic number, because the mean of its divisors is an integer number (116533004).

Almost surely, 2^698687949 is an apocalyptic number.

It is an amenable number.

698687949 is a deficient number, since it is larger than the sum of its proper divisors (233576083).

698687949 is a wasteful number, since it uses less digits than its factorization.

698687949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170027.

The product of its digits is 47029248, while the sum is 66.

The square root of 698687949 is about 26432.7060476221. The cubic root of 698687949 is about 887.3489046222.

The spelling of 698687949 in words is "six hundred ninety-eight million, six hundred eighty-seven thousand, nine hundred forty-nine".