71097963 has 16 divisors (see below), whose sum is σ = 98841600. Its totient is φ = 45418464.

The previous prime is 71097953. The next prime is 71097967. The reversal of 71097963 is 36979017.

It is not a de Polignac number, because 71097963 - 2¹⁰ = 71096939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71097967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1638 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (6177600).

Almost surely, 2^71097963 is an apocalyptic number.

71097963 is a deficient number, since it is larger than the sum of its proper divisors (27743637).

71097963 is a wasteful number, since it uses less digits than its factorization.

71097963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10498.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 71097963 is about 8431.9608039886. The cubic root of 71097963 is about 414.2721319878.

The spelling of 71097963 in words is "seventy-one million, ninety-seven thousand, nine hundred sixty-three".