71945403 has 8 divisors (see below), whose sum is σ = 100098048. Its totient is φ = 45878184.

The previous prime is 71945383. The next prime is 71945417. The reversal of 71945403 is 30454917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71945403 - 2⁵ = 71945371 is a prime.

It is a super-2 number, since 2×71945403² = 10352282025664818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71945443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521275 + ... + 521412.

It is an arithmetic number, because the mean of its divisors is an integer number (12512256).

Almost surely, 2^71945403 is an apocalyptic number.

71945403 is a deficient number, since it is larger than the sum of its proper divisors (28152645).

71945403 is a wasteful number, since it uses less digits than its factorization.

71945403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042713.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 71945403 is about 8482.0636050433. The cubic root of 71945403 is about 415.9115840048.

The spelling of 71945403 in words is "seventy-one million, nine hundred forty-five thousand, four hundred three".