86691470 has 16 divisors (see below), whose sum is σ = 157275648. Its totient is φ = 34403040.

The previous prime is 86691461. The next prime is 86691491. The reversal of 86691470 is 7419668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32861 + ... + 35400.

It is an arithmetic number, because the mean of its divisors is an integer number (9829728).

Almost surely, 2^86691470 is an apocalyptic number.

86691470 is a deficient number, since it is larger than the sum of its proper divisors (70584178).

86691470 is a wasteful number, since it uses less digits than its factorization.

86691470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68395.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 86691470 is about 9310.8254199077. The cubic root of 86691470 is about 442.5803443969.

The spelling of 86691470 in words is "eighty-six million, six hundred ninety-one thousand, four hundred seventy".