968520391 has 8 divisors (see below), whose sum is σ = 971608064. Its totient is φ = 965439000.

The previous prime is 968520373. The next prime is 968520407. The reversal of 968520391 is 193025869.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 968520391 - 2⁹ = 968519879 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 (968520331) 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, 617290 + ... + 618856.

It is an arithmetic number, because the mean of its divisors is an integer number (121451008).

Almost surely, 2^968520391 is an apocalyptic number.

968520391 is a deficient number, since it is larger than the sum of its proper divisors (3087673).

968520391 is a wasteful number, since it uses less digits than its factorization.

968520391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 968520391 is about 31121.0602486483. The cubic root of 968520391 is about 989.3947226918.

The spelling of 968520391 in words is "nine hundred sixty-eight million, five hundred twenty thousand, three hundred ninety-one".