86511019 has 12 divisors (see below), whose sum is σ = 100825248. Its totient is φ = 74012400.

The previous prime is 86511013. The next prime is 86511023. The reversal of 86511019 is 91011568.

It is not a de Polignac number, because 86511019 - 2⁹ = 86510507 is a prime.

It is a super-2 number, since 2×86511019² = 14968312816836722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86511013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31054 + ... + 33724.

It is an arithmetic number, because the mean of its divisors is an integer number (8402104).

Almost surely, 2^86511019 is an apocalyptic number.

86511019 is a deficient number, since it is larger than the sum of its proper divisors (14314229).

86511019 is a wasteful number, since it uses less digits than its factorization.

86511019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346 (or 3339 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 86511019 is about 9301.1299851147. The cubic root of 86511019 is about 442.2730494843.

The spelling of 86511019 in words is "eighty-six million, five hundred eleven thousand, nineteen".