73887497 has 4 divisors (see below), whose sum is σ = 74358276. Its totient is φ = 73416720.

The previous prime is 73887487. The next prime is 73887511. The reversal of 73887497 is 79478837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79478837 = 449 ⋅177013.

It can be written as a sum of positive squares in 2 ways, for example, as 56490256 + 17397241 = 7516^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 73887497 - 2⁴ = 73887481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73887427) 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, 235154 + ... + 235467.

It is an arithmetic number, because the mean of its divisors is an integer number (18589569).

Almost surely, 2^73887497 is an apocalyptic number.

It is an amenable number.

73887497 is a deficient number, since it is larger than the sum of its proper divisors (470779).

73887497 is a wasteful number, since it uses less digits than its factorization.

73887497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470778.

The product of its digits is 2370816, while the sum is 53.

The square root of 73887497 is about 8595.7836757331. The cubic root of 73887497 is about 419.6207782597.

The spelling of 73887497 in words is "seventy-three million, eight hundred eighty-seven thousand, four hundred ninety-seven".