71630411 has 4 divisors (see below), whose sum is σ = 72493512. Its totient is φ = 70767312.

The previous prime is 71630387. The next prime is 71630431. The reversal of 71630411 is 11403617.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71630411 - 2⁶ = 71630347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71630431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431426 + ... + 431591.

It is an arithmetic number, because the mean of its divisors is an integer number (18123378).

Almost surely, 2^71630411 is an apocalyptic number.

71630411 is a deficient number, since it is larger than the sum of its proper divisors (863101).

71630411 is an equidigital number, since it uses as much as digits as its factorization.

71630411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863100.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 71630411 is about 8463.4751136870. The cubic root of 71630411 is about 415.3037134193.

The spelling of 71630411 in words is "seventy-one million, six hundred thirty thousand, four hundred eleven".