701542661 has 2 divisors, whose sum is σ = 701542662. Its totient is φ = 701542660.

The previous prime is 701542657. The next prime is 701542663. The reversal of 701542661 is 166245107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365956900 + 335585761 = 19130^2 + 18319^2 .

It is a cyclic number.

It is not a de Polignac number, because 701542661 - 2² = 701542657 is a prime.

Together with 701542663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (701542663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350771330 + 350771331.

It is an arithmetic number, because the mean of its divisors is an integer number (350771331).

Almost surely, 2^701542661 is an apocalyptic number.

It is an amenable number.

701542661 is a deficient number, since it is larger than the sum of its proper divisors (1).

701542661 is an equidigital number, since it uses as much as digits as its factorization.

701542661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 701542661 is about 26486.6506187551. The cubic root of 701542661 is about 888.5557778843. Note that the first 3 decimals are identical.

Adding to 701542661 its reverse (166245107), we get a palindrome (867787768).

The spelling of 701542661 in words is "seven hundred one million, five hundred forty-two thousand, six hundred sixty-one".