71670394 has 16 divisors (see below), whose sum is σ = 115574400. Its totient is φ = 33225984.

The previous prime is 71670371. The next prime is 71670409. The reversal of 71670394 is 49307617.

It is a super-3 number, since 3×71670394³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18279 + ... + 21850.

It is an arithmetic number, because the mean of its divisors is an integer number (7223400).

Almost surely, 2^71670394 is an apocalyptic number.

71670394 is a deficient number, since it is larger than the sum of its proper divisors (43904006).

71670394 is a wasteful number, since it uses less digits than its factorization.

71670394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40197.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 71670394 is about 8465.8368753479. The cubic root of 71670394 is about 415.3809711069.

The spelling of 71670394 in words is "seventy-one million, six hundred seventy thousand, three hundred ninety-four".