84270657 has 16 divisors (see below), whose sum is σ = 114636032. Its totient is φ = 55051920.

The previous prime is 84270653. The next prime is 84270661. The reversal of 84270657 is 75607248.

It is an interprime number because it is at equal distance from previous prime (84270653) and next prime (84270661).

It is not a de Polignac number, because 84270657 - 2² = 84270653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84270653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41418 + ... + 43404.

It is an arithmetic number, because the mean of its divisors is an integer number (7164752).

Almost surely, 2^84270657 is an apocalyptic number.

It is an amenable number.

84270657 is a deficient number, since it is larger than the sum of its proper divisors (30365375).

84270657 is a wasteful number, since it uses less digits than its factorization.

84270657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 84270657 is about 9179.9050648686. The cubic root of 84270657 is about 438.4217856873.

The spelling of 84270657 in words is "eighty-four million, two hundred seventy thousand, six hundred fifty-seven".