701389561 has 2 divisors, whose sum is σ = 701389562. Its totient is φ = 701389560.

The previous prime is 701389537. The next prime is 701389609. The reversal of 701389561 is 165983107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370331536 + 331058025 = 19244^2 + 18195^2 .

It is a cyclic number.

It is not a de Polignac number, because 701389561 - 2²¹ = 699292409 is a prime.

It is not a weakly prime, because it can be changed into another prime (701389511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350694780 + 350694781.

It is an arithmetic number, because the mean of its divisors is an integer number (350694781).

Almost surely, 2^701389561 is an apocalyptic number.

It is an amenable number.

701389561 is a deficient number, since it is larger than the sum of its proper divisors (1).

701389561 is an equidigital number, since it uses as much as digits as its factorization.

701389561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 701389561 is about 26483.7603259054. The cubic root of 701389561 is about 888.4911356825.

The spelling of 701389561 in words is "seven hundred one million, three hundred eighty-nine thousand, five hundred sixty-one".