71494857 has 48 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 39283200.

The previous prime is 71494793. The next prime is 71494859. The reversal of 71494857 is 75849417.

It is a happy number.

It is not a de Polignac number, because 71494857 - 2⁶ = 71494793 is a prime.

It is a super-2 number, since 2×71494857² = 10223029154900898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71494859) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229732 + ... + 230042.

It is an arithmetic number, because the mean of its divisors is an integer number (2555280).

Almost surely, 2^71494857 is an apocalyptic number.

It is an amenable number.

71494857 is a deficient number, since it is larger than the sum of its proper divisors (51158583).

71494857 is a wasteful number, since it uses less digits than its factorization.

71494857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 451 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 71494857 is about 8455.4631452097. The cubic root of 71494857 is about 415.0415732291.

The spelling of 71494857 in words is "seventy-one million, four hundred ninety-four thousand, eight hundred fifty-seven".