71675440 has 40 divisors (see below), whose sum is σ = 167007168. Its totient is φ = 28608000.

The previous prime is 71675437. The next prime is 71675449. The reversal of 71675440 is 4457617.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71675396 and 71675405.

It is not an unprimeable number, because it can be changed into a prime (71675449) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 59484 + ... + 60676.

Almost surely, 2^71675440 is an apocalyptic number.

It is an amenable number.

71675440 is an abundant number, since it is smaller than the sum of its proper divisors (95331728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71675440 is a wasteful number, since it uses less digits than its factorization.

71675440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 71675440 is about 8466.1348914366. The cubic root of 71675440 is about 415.3907192659.

The spelling of 71675440 in words is "seventy-one million, six hundred seventy-five thousand, four hundred forty".