73980457 has 4 divisors (see below), whose sum is σ = 73998160. Its totient is φ = 73962756.

The previous prime is 73980377. The next prime is 73980497. The reversal of 73980457 is 75408937.

It is a happy number.

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 73980457 - 2¹⁵ = 73947689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73980497) 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, 1294 + ... + 12232.

It is an arithmetic number, because the mean of its divisors is an integer number (18499540).

Almost surely, 2^73980457 is an apocalyptic number.

It is an amenable number.

73980457 is a deficient number, since it is larger than the sum of its proper divisors (17703).

73980457 is a wasteful number, since it uses less digits than its factorization.

73980457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17702.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 73980457 is about 8601.1892782336. The cubic root of 73980457 is about 419.7966835280.

The spelling of 73980457 in words is "seventy-three million, nine hundred eighty thousand, four hundred fifty-seven".