978577901 has 8 divisors (see below), whose sum is σ = 1118568384. Its totient is φ = 838635840.

The previous prime is 978577883. The next prime is 978577903. The reversal of 978577901 is 109775879.

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

It is a de Polignac number, because none of the positive numbers 2^k-978577901 is a prime.

It is a super-2 number, since 2×978577901² = 1915229416651131602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978577903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59306 + ... + 73988.

It is an arithmetic number, because the mean of its divisors is an integer number (139821048).

Almost surely, 2^978577901 is an apocalyptic number.

It is an amenable number.

978577901 is a deficient number, since it is larger than the sum of its proper divisors (139990483).

978577901 is a wasteful number, since it uses less digits than its factorization.

978577901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24211.

The product of its (nonzero) digits is 1111320, while the sum is 53.

The square root of 978577901 is about 31282.2297958442. The cubic root of 978577901 is about 992.8076951011.

The spelling of 978577901 in words is "nine hundred seventy-eight million, five hundred seventy-seven thousand, nine hundred one".