71485641 has 12 divisors (see below), whose sum is σ = 104012532. Its totient is φ = 47308416.

The previous prime is 71485627. The next prime is 71485649. The reversal of 71485641 is 14658417.

It is a happy number.

71485641 is a `hidden beast` number, since 7 + 1 + 4 + 8 + 5 + 641 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31036041 + 40449600 = 5571^2 + 6360^2 .

It is not a de Polignac number, because 71485641 - 2⁶ = 71485577 is a prime.

It is a super-2 number, since 2×71485641² = 10220393738361762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71485596 and 71485605.

It is not an unprimeable number, because it can be changed into a prime (71485649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27756 + ... + 30221.

It is an arithmetic number, because the mean of its divisors is an integer number (8667711).

Almost surely, 2^71485641 is an apocalyptic number.

It is an amenable number.

71485641 is a deficient number, since it is larger than the sum of its proper divisors (32526891).

71485641 is a wasteful number, since it uses less digits than its factorization.

71485641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58120 (or 58117 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 71485641 is about 8454.9181545418. The cubic root of 71485641 is about 415.0237389043.

The spelling of 71485641 in words is "seventy-one million, four hundred eighty-five thousand, six hundred forty-one".