739570661 has 2 divisors, whose sum is σ = 739570662. Its totient is φ = 739570660.

The previous prime is 739570651. The next prime is 739570679. The reversal of 739570661 is 166075937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738154561 + 1416100 = 27169^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 739570661 - 2²² = 735376357 is a prime.

It is a super-2 number, since 2×739570661² = 1093929525223953842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (739570651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369785330 + 369785331.

It is an arithmetic number, because the mean of its divisors is an integer number (369785331).

Almost surely, 2^739570661 is an apocalyptic number.

It is an amenable number.

739570661 is a deficient number, since it is larger than the sum of its proper divisors (1).

739570661 is an equidigital number, since it uses as much as digits as its factorization.

739570661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 739570661 is about 27195.0484647481. The cubic root of 739570661 is about 904.3292083704.

The spelling of 739570661 in words is "seven hundred thirty-nine million, five hundred seventy thousand, six hundred sixty-one".