74731471 has 2 divisors, whose sum is σ = 74731472. Its totient is φ = 74731470.

The previous prime is 74731429. The next prime is 74731477. The reversal of 74731471 is 17413747.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74731471 - 2¹¹ = 74729423 is a prime.

It is a super-3 number, since 3×74731471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74731477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37365735 + 37365736.

It is an arithmetic number, because the mean of its divisors is an integer number (37365736).

Almost surely, 2^74731471 is an apocalyptic number.

74731471 is a deficient number, since it is larger than the sum of its proper divisors (1).

74731471 is an equidigital number, since it uses as much as digits as its factorization.

74731471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464, while the sum is 34.

The square root of 74731471 is about 8644.7366067452. The cubic root of 74731471 is about 421.2124282692.

The spelling of 74731471 in words is "seventy-four million, seven hundred thirty-one thousand, four hundred seventy-one".