698610625 has 30 divisors (see below), whose sum is σ = 913021802. Its totient is φ = 534336000.

The previous prime is 698610607. The next prime is 698610643. The reversal of 698610625 is 526016896.

It is an interprime number because it is at equal distance from previous prime (698610607) and next prime (698610643).

It can be written as a sum of positive squares in 5 ways, for example, as 527942529 + 170668096 = 22977^2 + 13064^2 .

It is not a de Polignac number, because 698610625 - 2¹⁵ = 698577857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 329569 + ... + 331681.

Almost surely, 2^698610625 is an apocalyptic number.

It is an amenable number.

698610625 is a deficient number, since it is larger than the sum of its proper divisors (214411177).

698610625 is an equidigital number, since it uses as much as digits as its factorization.

698610625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 698610625 is about 26431.2433494908. The cubic root of 698610625 is about 887.3161690268.

The spelling of 698610625 in words is "six hundred ninety-eight million, six hundred ten thousand, six hundred twenty-five".