86478806 has 4 divisors (see below), whose sum is σ = 129718212. Its totient is φ = 43239402.

The previous prime is 86478773. The next prime is 86478811. The reversal of 86478806 is 60887468.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21619700 + ... + 21619703.

It is an arithmetic number, because the mean of its divisors is an integer number (32429553).

Almost surely, 2^86478806 is an apocalyptic number.

86478806 is a deficient number, since it is larger than the sum of its proper divisors (43239406).

86478806 is a wasteful number, since it uses less digits than its factorization.

86478806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43239405.

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 86478806 is about 9299.3981525688. The cubic root of 86478806 is about 442.2181481527.

The spelling of 86478806 in words is "eighty-six million, four hundred seventy-eight thousand, eight hundred six".