978107641 has 8 divisors (see below), whose sum is σ = 1118323584. Its totient is φ = 838013280.

The previous prime is 978107639. The next prime is 978107653. The reversal of 978107641 is 146701879.

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 978107641 - 2¹ = 978107639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978107681) 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, 12445 + ... + 45946.

It is an arithmetic number, because the mean of its divisors is an integer number (139790448).

Almost surely, 2^978107641 is an apocalyptic number.

It is an amenable number.

978107641 is a deficient number, since it is larger than the sum of its proper divisors (140215943).

978107641 is a wasteful number, since it uses less digits than its factorization.

978107641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60791.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 978107641 is about 31274.7124846896. The cubic root of 978107641 is about 992.6486368892.

The spelling of 978107641 in words is "nine hundred seventy-eight million, one hundred seven thousand, six hundred forty-one".