691060441 has 2 divisors, whose sum is σ = 691060442. Its totient is φ = 691060440.

The previous prime is 691060429. The next prime is 691060519. The reversal of 691060441 is 144060196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445041216 + 246019225 = 21096^2 + 15685^2 .

It is a cyclic number.

It is not a de Polignac number, because 691060441 - 2⁷ = 691060313 is a prime.

It is a super-2 number, since 2×691060441² = 955129066230228962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (691060141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345530220 + 345530221.

It is an arithmetic number, because the mean of its divisors is an integer number (345530221).

Almost surely, 2^691060441 is an apocalyptic number.

It is an amenable number.

691060441 is a deficient number, since it is larger than the sum of its proper divisors (1).

691060441 is an equidigital number, since it uses as much as digits as its factorization.

691060441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 691060441 is about 26288.0284730521. The cubic root of 691060441 is about 884.1080487525.

The spelling of 691060441 in words is "six hundred ninety-one million, sixty thousand, four hundred forty-one".