71519963 has 2 divisors, whose sum is σ = 71519964. Its totient is φ = 71519962.

The previous prime is 71519911. The next prime is 71519989. The reversal of 71519963 is 36991517.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71519963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71519963.

It is not a weakly prime, because it can be changed into another prime (71519563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35759981 + 35759982.

It is an arithmetic number, because the mean of its divisors is an integer number (35759982).

Almost surely, 2^71519963 is an apocalyptic number.

71519963 is a deficient number, since it is larger than the sum of its proper divisors (1).

71519963 is an equidigital number, since it uses as much as digits as its factorization.

71519963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 41.

The square root of 71519963 is about 8456.9476171962. The cubic root of 71519963 is about 415.0901492840.

The spelling of 71519963 in words is "seventy-one million, five hundred nineteen thousand, nine hundred sixty-three".