86741591 has 8 divisors (see below), whose sum is σ = 87546480. Its totient is φ = 85940352.

The previous prime is 86741587. The next prime is 86741647. The reversal of 86741591 is 19514768.

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 86741591 - 2² = 86741587 is a prime.

It is a super-2 number, since 2×86741591² = 15048207218422562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86741521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69965 + ... + 71193.

It is an arithmetic number, because the mean of its divisors is an integer number (10943310).

Almost surely, 2^86741591 is an apocalyptic number.

86741591 is a deficient number, since it is larger than the sum of its proper divisors (804889).

86741591 is a wasteful number, since it uses less digits than its factorization.

86741591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825.

The product of its digits is 60480, while the sum is 41.

The square root of 86741591 is about 9313.5165753865. The cubic root of 86741591 is about 442.6656211291.

The spelling of 86741591 in words is "eighty-six million, seven hundred forty-one thousand, five hundred ninety-one".