71490373 has 4 divisors (see below), whose sum is σ = 71706688. Its totient is φ = 71274060.

The previous prime is 71490361. The next prime is 71490379. The reversal of 71490373 is 37309417.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37309417 = 59 ⋅632363.

It is a cyclic number.

It is not a de Polignac number, because 71490373 - 2¹³ = 71482181 is a prime.

It is a super-2 number, since 2×71490373² = 10221746863358258, 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 (71490379) 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, 107661 + ... + 108322.

It is an arithmetic number, because the mean of its divisors is an integer number (17926672).

Almost surely, 2^71490373 is an apocalyptic number.

It is an amenable number.

71490373 is a deficient number, since it is larger than the sum of its proper divisors (216315).

71490373 is a wasteful number, since it uses less digits than its factorization.

71490373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216314.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 71490373 is about 8455.1979870373. The cubic root of 71490373 is about 415.0328962165.

The spelling of 71490373 in words is "seventy-one million, four hundred ninety thousand, three hundred seventy-three".