701906991 has 16 divisors (see below), whose sum is σ = 969400320. Its totient is φ = 451280160.

The previous prime is 701906971. The next prime is 701907001. The reversal of 701906991 is 199609107.

It is not a de Polignac number, because 701906991 - 2²¹ = 699809839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701906971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14370 + ... + 40128.

It is an arithmetic number, because the mean of its divisors is an integer number (60587520).

Almost surely, 2^701906991 is an apocalyptic number.

701906991 is a deficient number, since it is larger than the sum of its proper divisors (267493329).

701906991 is a wasteful number, since it uses less digits than its factorization.

701906991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26086.

The product of its (nonzero) digits is 30618, while the sum is 42.

The square root of 701906991 is about 26493.5273415980. The cubic root of 701906991 is about 888.7095682478.

The spelling of 701906991 in words is "seven hundred one million, nine hundred six thousand, nine hundred ninety-one".