71490086 has 4 divisors (see below), whose sum is σ = 107235132. Its totient is φ = 35745042.

The previous prime is 71490079. The next prime is 71490127. The reversal of 71490086 is 68009417.

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

It is a super-2 number, since 2×71490086² = 10221664792574792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17872520 + ... + 17872523.

It is an arithmetic number, because the mean of its divisors is an integer number (26808783).

Almost surely, 2^71490086 is an apocalyptic number.

71490086 is a deficient number, since it is larger than the sum of its proper divisors (35745046).

71490086 is a wasteful number, since it uses less digits than its factorization.

71490086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35745045.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 71490086 is about 8455.1810152119. The cubic root of 71490086 is about 415.0323408289.

The spelling of 71490086 in words is "seventy-one million, four hundred ninety thousand, eighty-six".