978580275 has 24 divisors (see below), whose sum is σ = 1703075520. Its totient is φ = 494439840.

The previous prime is 978580271. The next prime is 978580307. The reversal of 978580275 is 572085879.

It is not a de Polignac number, because 978580275 - 2² = 978580271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978580271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341937 + ... + 344786.

It is an arithmetic number, because the mean of its divisors is an integer number (70961480).

Almost surely, 2^978580275 is an apocalyptic number.

978580275 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

978580275 is a deficient number, since it is larger than the sum of its proper divisors (724495245).

978580275 is a wasteful number, since it uses less digits than its factorization.

978580275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686755 (or 686750 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The square root of 978580275 is about 31282.2677406866. The cubic root of 978580275 is about 992.8084979408.

The spelling of 978580275 in words is "nine hundred seventy-eight million, five hundred eighty thousand, two hundred seventy-five".