71374477 has 2 divisors, whose sum is σ = 71374478. Its totient is φ = 71374476.

The previous prime is 71374463. The next prime is 71374487. The reversal of 71374477 is 77447317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42954916 + 28419561 = 6554^2 + 5331^2 .

It is an emirp because it is prime and its reverse (77447317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71374477 - 2⁷ = 71374349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71374447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35687238 + 35687239.

It is an arithmetic number, because the mean of its divisors is an integer number (35687239).

Almost surely, 2^71374477 is an apocalyptic number.

It is an amenable number.

71374477 is a deficient number, since it is larger than the sum of its proper divisors (1).

71374477 is an equidigital number, since it uses as much as digits as its factorization.

71374477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115248, while the sum is 40.

The square root of 71374477 is about 8448.3416715945. The cubic root of 71374477 is about 414.8084992495.

The spelling of 71374477 in words is "seventy-one million, three hundred seventy-four thousand, four hundred seventy-seven".