73874309 has 8 divisors (see below), whose sum is σ = 74588640. Its totient is φ = 73163376.

The previous prime is 73874291. The next prime is 73874323. The reversal of 73874309 is 90347837.

73874309 = 320² + 321² + ... + 633².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73874309 - 2¹² = 73870213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73874369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65222 + ... + 66344.

It is an arithmetic number, because the mean of its divisors is an integer number (9323580).

Almost surely, 2^73874309 is an apocalyptic number.

It is an amenable number.

73874309 is a deficient number, since it is larger than the sum of its proper divisors (714331).

73874309 is a wasteful number, since it uses less digits than its factorization.

73874309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 73874309 is about 8595.0165212174. The cubic root of 73874309 is about 419.5958110761.

The spelling of 73874309 in words is "seventy-three million, eight hundred seventy-four thousand, three hundred nine".