976145561 has 8 divisors (see below), whose sum is σ = 995455104. Its totient is φ = 956996640.

The previous prime is 976145551. The next prime is 976145587. The reversal of 976145561 is 165541679.

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 976145561 - 2⁶ = 976145497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (976145531) 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, 27845 + ... + 52226.

It is an arithmetic number, because the mean of its divisors is an integer number (124431888).

Almost surely, 2^976145561 is an apocalyptic number.

It is an amenable number.

976145561 is a deficient number, since it is larger than the sum of its proper divisors (19309543).

976145561 is a wasteful number, since it uses less digits than its factorization.

976145561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80311.

The product of its digits is 226800, while the sum is 44.

The square root of 976145561 is about 31243.3282638070. The cubic root of 976145561 is about 991.9844428410.

The spelling of 976145561 in words is "nine hundred seventy-six million, one hundred forty-five thousand, five hundred sixty-one".