86377505 has 4 divisors (see below), whose sum is σ = 103653012. Its totient is φ = 69102000.

The previous prime is 86377471. The next prime is 86377507. The reversal of 86377505 is 50577368.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51437584 + 34939921 = 7172^2 + 5911^2 .

It is not a de Polignac number, because 86377505 - 2⁶ = 86377441 is a prime.

It is a super-2 number, since 2×86377505² = 14922146740050050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86377507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8637746 + ... + 8637755.

It is an arithmetic number, because the mean of its divisors is an integer number (25913253).

Almost surely, 2^86377505 is an apocalyptic number.

It is an amenable number.

86377505 is a deficient number, since it is larger than the sum of its proper divisors (17275507).

86377505 is a wasteful number, since it uses less digits than its factorization.

86377505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17275506.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 86377505 is about 9293.9499137880. The cubic root of 86377505 is about 442.0454097064.

The spelling of 86377505 in words is "eighty-six million, three hundred seventy-seven thousand, five hundred five".