978746975 has 12 divisors (see below), whose sum is σ = 1226161104. Its totient is φ = 774923520.

The previous prime is 978746971. The next prime is 978746987. The reversal of 978746975 is 579647879.

It is not a de Polignac number, because 978746975 - 2² = 978746971 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 (978746971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199379 + ... + 204228.

It is an arithmetic number, because the mean of its divisors is an integer number (102180092).

Almost surely, 2^978746975 is an apocalyptic number.

978746975 is a deficient number, since it is larger than the sum of its proper divisors (247414129).

978746975 is a wasteful number, since it uses less digits than its factorization.

978746975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403714 (or 403709 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 62.

The square root of 978746975 is about 31284.9320760011. The cubic root of 978746975 is about 992.8648693270.

The spelling of 978746975 in words is "nine hundred seventy-eight million, seven hundred forty-six thousand, nine hundred seventy-five".