9690290557 has 2 divisors, whose sum is σ = 9690290558. Its totient is φ = 9690290556.

The previous prime is 9690290551. The next prime is 9690290689. The reversal of 9690290557 is 7550920969.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8070147556 + 1620143001 = 89834^2 + 40251^2 .

It is an emirp because it is prime and its reverse (7550920969) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9690290557 - 2³ = 9690290549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9690290551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4845145278 + 4845145279.

It is an arithmetic number, because the mean of its divisors is an integer number (4845145279).

Almost surely, 2^9690290557 is an apocalyptic number.

It is an amenable number.

9690290557 is a deficient number, since it is larger than the sum of its proper divisors (1).

9690290557 is an equidigital number, since it uses as much as digits as its factorization.

9690290557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The square root of 9690290557 is about 98439.2734481518. The cubic root of 9690290557 is about 2131.9594154814.

The spelling of 9690290557 in words is "nine billion, six hundred ninety million, two hundred ninety thousand, five hundred fifty-seven".