73664894 has 4 divisors (see below), whose sum is σ = 110497344. Its totient is φ = 36832446.

The previous prime is 73664887. The next prime is 73664909. The reversal of 73664894 is 49846637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49846637 = 5113 ⋅9749.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18416222 + ... + 18416225.

It is an arithmetic number, because the mean of its divisors is an integer number (27624336).

Almost surely, 2^73664894 is an apocalyptic number.

73664894 is a deficient number, since it is larger than the sum of its proper divisors (36832450).

73664894 is a wasteful number, since it uses less digits than its factorization.

73664894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36832449.

The product of its digits is 870912, while the sum is 47.

The square root of 73664894 is about 8582.8255254316. The cubic root of 73664894 is about 419.1989531409.

The spelling of 73664894 in words is "seventy-three million, six hundred sixty-four thousand, eight hundred ninety-four".