700991 has 4 divisors (see below), whose sum is σ = 703752. Its totient is φ = 698232.

The previous prime is 700963. The next prime is 700993. The reversal of 700991 is 199007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199007 = 59 ⋅3373.

It is a cyclic number.

It is not a de Polignac number, because 700991 - 2¹⁰ = 699967 is a prime.

It is a super-3 number, since 3×700991³ = 1033376500030026813, which contains 333 as substring.

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 700991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700993) 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, 956 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (175938).

2⁷⁰⁰⁹⁹¹ is an apocalyptic number.

700991 is a deficient number, since it is larger than the sum of its proper divisors (2761).

700991 is a wasteful number, since it uses less digits than its factorization.

700991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 700991 is about 837.2520528491. The cubic root of 700991 is about 88.8322810294.

Adding to 700991 its reverse (199007), we get a palindrome (899998).

The spelling of 700991 in words is "seven hundred thousand, nine hundred ninety-one".