84657697 has 8 divisors (see below), whose sum is σ = 85785152. Its totient is φ = 83538000.

The previous prime is 84657689. The next prime is 84657719. The reversal of 84657697 is 79675648.

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 84657697 - 2³ = 84657689 is a prime.

It is a super-2 number, since 2×84657697² = 14333851322687618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84657647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21922 + ... + 25492.

It is an arithmetic number, because the mean of its divisors is an integer number (10723144).

Almost surely, 2^84657697 is an apocalyptic number.

It is an amenable number.

84657697 is a deficient number, since it is larger than the sum of its proper divisors (1127455).

84657697 is a wasteful number, since it uses less digits than its factorization.

84657697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879.

The product of its digits is 2540160, while the sum is 52.

The square root of 84657697 is about 9200.9617432092. The cubic root of 84657697 is about 439.0919582579.

The spelling of 84657697 in words is "eighty-four million, six hundred fifty-seven thousand, six hundred ninety-seven".