73412649 has 10 divisors (see below), whose sum is σ = 109665930. Its totient is φ = 48941712.

The previous prime is 73412639. The next prime is 73412657. The reversal of 73412649 is 94621437.

73412649 is a `hidden beast` number, since 7 + 3 + 4 + 1 + 2 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73410624 + 2025 = 8568^2 + 45^2 .

It is not a de Polignac number, because 73412649 - 2⁸ = 73412393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73412609) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 453084 + ... + 453245.

It is an arithmetic number, because the mean of its divisors is an integer number (10966593).

Almost surely, 2^73412649 is an apocalyptic number.

It is an amenable number.

73412649 is a deficient number, since it is larger than the sum of its proper divisors (36253281).

73412649 is an equidigital number, since it uses as much as digits as its factorization.

73412649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906341 (or 906332 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 73412649 is about 8568.1181714540. The cubic root of 73412649 is about 418.7199291097.

The spelling of 73412649 in words is "seventy-three million, four hundred twelve thousand, six hundred forty-nine".