84641557 has 24 divisors (see below), whose sum is σ = 114520448. Its totient is φ = 60873120.

The previous prime is 84641551. The next prime is 84641593. The reversal of 84641557 is 75514648.

It is not a de Polignac number, because 84641557 - 2¹⁹ = 84117269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84641551) 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, 7168 + ... + 14854.

Almost surely, 2^84641557 is an apocalyptic number.

It is an amenable number.

84641557 is a deficient number, since it is larger than the sum of its proper divisors (29878891).

84641557 is a wasteful number, since it uses less digits than its factorization.

84641557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729 (or 7718 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 84641557 is about 9200.0846191761. The cubic root of 84641557 is about 439.0640521730.

The spelling of 84641557 in words is "eighty-four million, six hundred forty-one thousand, five hundred fifty-seven".