71374397 has 4 divisors (see below), whose sum is σ = 71895516. Its totient is φ = 70853280.

The previous prime is 71374379. The next prime is 71374403. The reversal of 71374397 is 79347317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31292836 + 40081561 = 5594^2 + 6331^2 .

It is a cyclic number.

It is not a de Polignac number, because 71374397 - 2¹⁰ = 71373373 is a prime.

It is a super-2 number, since 2×71374397² = 10188609094227218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71374357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260354 + ... + 260627.

It is an arithmetic number, because the mean of its divisors is an integer number (17973879).

Almost surely, 2^71374397 is an apocalyptic number.

It is an amenable number.

71374397 is a deficient number, since it is larger than the sum of its proper divisors (521119).

71374397 is a wasteful number, since it uses less digits than its factorization.

71374397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521118.

The product of its digits is 111132, while the sum is 41.

The square root of 71374397 is about 8448.3369369362. The cubic root of 71374397 is about 414.8083442702.

The spelling of 71374397 in words is "seventy-one million, three hundred seventy-four thousand, three hundred ninety-seven".