700985581 has 4 divisors (see below), whose sum is σ = 701374464. Its totient is φ = 700596700.

The previous prime is 700985573. The next prime is 700985693. The reversal of 700985581 is 185589007.

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, and also an emirpimes, since its reverse is a distinct semiprime: 185589007 = 3011 ⋅61637.

It is a cyclic number.

It is not a de Polignac number, because 700985581 - 2³ = 700985573 is a prime.

It is a super-3 number, since 3×700985581³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700985501) 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, 191725 + ... + 195346.

It is an arithmetic number, because the mean of its divisors is an integer number (175343616).

Almost surely, 2^700985581 is an apocalyptic number.

It is an amenable number.

700985581 is a deficient number, since it is larger than the sum of its proper divisors (388883).

700985581 is a wasteful number, since it uses less digits than its factorization.

700985581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388882.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 700985581 is about 26476.1322892903. The cubic root of 700985581 is about 888.3205212324.

The spelling of 700985581 in words is "seven hundred million, nine hundred eighty-five thousand, five hundred eighty-one".