978654611 has 4 divisors (see below), whose sum is σ = 1067623224. Its totient is φ = 889686000.

The previous prime is 978654559. The next prime is 978654613. The reversal of 978654611 is 116456879.

978654611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 978654611 - 2¹⁰ = 978653587 is a prime.

It is a super-2 number, since 2×978654611² = 1915529695263122642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978654613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44484290 + ... + 44484311.

It is an arithmetic number, because the mean of its divisors is an integer number (266905806).

Almost surely, 2^978654611 is an apocalyptic number.

978654611 is a deficient number, since it is larger than the sum of its proper divisors (88968613).

978654611 is a wasteful number, since it uses less digits than its factorization.

978654611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88968612.

The product of its digits is 362880, while the sum is 47.

The square root of 978654611 is about 31283.4558672791. The cubic root of 978654611 is about 992.8336362443.

The spelling of 978654611 in words is "nine hundred seventy-eight million, six hundred fifty-four thousand, six hundred eleven".