9661396527 has 8 divisors (see below), whose sum is σ = 14313180080. Its totient is φ = 6440931000.

The previous prime is 9661396523. The next prime is 9661396541. The reversal of 9661396527 is 7256931669.

It is not a de Polignac number, because 9661396527 - 2² = 9661396523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661396523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178914724 + ... + 178914777.

It is an arithmetic number, because the mean of its divisors is an integer number (1789147510).

Almost surely, 2^9661396527 is an apocalyptic number.

9661396527 is a deficient number, since it is larger than the sum of its proper divisors (4651783553).

9661396527 is a wasteful number, since it uses less digits than its factorization.

9661396527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357829510 (or 357829504 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 9661396527 is about 98292.4032008578. The cubic root of 9661396527 is about 2129.8383154399.

The spelling of 9661396527 in words is "nine billion, six hundred sixty-one million, three hundred ninety-six thousand, five hundred twenty-seven".