71030477 has 4 divisors (see below), whose sum is σ = 81177696. Its totient is φ = 60883260.

The previous prime is 71030473. The next prime is 71030497. The reversal of 71030477 is 77403017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71030477 - 2² = 71030473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71030473) 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, 5073599 + ... + 5073612.

It is an arithmetic number, because the mean of its divisors is an integer number (20294424).

Almost surely, 2^71030477 is an apocalyptic number.

It is an amenable number.

71030477 is a deficient number, since it is larger than the sum of its proper divisors (10147219).

71030477 is a wasteful number, since it uses less digits than its factorization.

71030477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147218.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 71030477 is about 8427.9580563740. The cubic root of 71030477 is about 414.1410151534.

The spelling of 71030477 in words is "seventy-one million, thirty thousand, four hundred seventy-seven".