71379747 has 12 divisors (see below), whose sum is σ = 103196704. Its totient is φ = 47543760.

The previous prime is 71379743. The next prime is 71379767. The reversal of 71379747 is 74797317.

It is not a de Polignac number, because 71379747 - 2² = 71379743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71379743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9558 + ... + 15300.

Almost surely, 2^71379747 is an apocalyptic number.

71379747 is a deficient number, since it is larger than the sum of its proper divisors (31816957).

71379747 is a wasteful number, since it uses less digits than its factorization.

71379747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130 (or 7127 counting only the distinct ones).

The product of its digits is 259308, while the sum is 45.

The square root of 71379747 is about 8448.6535613670. The cubic root of 71379747 is about 414.8187082536.

The spelling of 71379747 in words is "seventy-one million, three hundred seventy-nine thousand, seven hundred forty-seven".