73270649 has 4 divisors (see below), whose sum is σ = 75057780. Its totient is φ = 71483520.

The previous prime is 73270633. The next prime is 73270661. The reversal of 73270649 is 94607237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94607237 = 1523 ⋅62119.

It can be written as a sum of positive squares in 2 ways, for example, as 4380649 + 68890000 = 2093^2 + 8300^2 .

It is a cyclic number.

It is not a de Polignac number, because 73270649 - 2⁴ = 73270633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73270609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893504 + ... + 893585.

It is an arithmetic number, because the mean of its divisors is an integer number (18764445).

Almost surely, 2^73270649 is an apocalyptic number.

It is an amenable number.

73270649 is a deficient number, since it is larger than the sum of its proper divisors (1787131).

73270649 is a wasteful number, since it uses less digits than its factorization.

73270649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787130.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 73270649 is about 8559.8276267691. The cubic root of 73270649 is about 418.4497821703.

The spelling of 73270649 in words is "seventy-three million, two hundred seventy thousand, six hundred forty-nine".