84761257 has 16 divisors (see below), whose sum is σ = 100818432. Its totient is φ = 69750720.

The previous prime is 84761189. The next prime is 84761293. The reversal of 84761257 is 75216748.

It is a cyclic number.

It is not a de Polignac number, because 84761257 - 2⁷ = 84761129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84764257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15007 + ... + 19867.

It is an arithmetic number, because the mean of its divisors is an integer number (6301152).

Almost surely, 2^84761257 is an apocalyptic number.

It is an amenable number.

84761257 is a deficient number, since it is larger than the sum of its proper divisors (16057175).

84761257 is a wasteful number, since it uses less digits than its factorization.

84761257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968.

The product of its digits is 94080, while the sum is 40.

The square root of 84761257 is about 9206.5876957752. The cubic root of 84761257 is about 439.2709293206.

The spelling of 84761257 in words is "eighty-four million, seven hundred sixty-one thousand, two hundred fifty-seven".