977569967 has 8 divisors (see below), whose sum is σ = 1089130752. Its totient is φ = 869791000.

The previous prime is 977569949. The next prime is 977569973. The reversal of 977569967 is 769965779.

It is a happy number.

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 977569967 - 2¹⁴ = 977553583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977569067) 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, 944909 + ... + 945942.

It is an arithmetic number, because the mean of its divisors is an integer number (136141344).

Almost surely, 2^977569967 is an apocalyptic number.

977569967 is a deficient number, since it is larger than the sum of its proper divisors (111560785).

977569967 is a wasteful number, since it uses less digits than its factorization.

977569967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890909.

The product of its digits is 45008460, while the sum is 65.

The square root of 977569967 is about 31266.1153167451. The cubic root of 977569967 is about 992.4667144478.

The spelling of 977569967 in words is "nine hundred seventy-seven million, five hundred sixty-nine thousand, nine hundred sixty-seven".