84779667 has 24 divisors (see below), whose sum is σ = 140481120. Its totient is φ = 48263040.

The previous prime is 84779627. The next prime is 84779671. The reversal of 84779667 is 76697748.

It is a de Polignac number, because none of the positive numbers 2^k-84779667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84779627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15309 + ... + 20097.

It is an arithmetic number, because the mean of its divisors is an integer number (5853380).

Almost surely, 2^84779667 is an apocalyptic number.

84779667 is a deficient number, since it is larger than the sum of its proper divisors (55701453).

84779667 is a wasteful number, since it uses less digits than its factorization.

84779667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083 (or 5080 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 84779667 is about 9207.5874690388. The cubic root of 84779667 is about 439.3027299831.

The spelling of 84779667 in words is "eighty-four million, seven hundred seventy-nine thousand, six hundred sixty-seven".