73773381 has 8 divisors (see below), whose sum is σ = 107306784. Its totient is φ = 44711120.

The previous prime is 73773379. The next prime is 73773383. The reversal of 73773381 is 18337737.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73773379) and next prime (73773383).

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 73773381 - 2¹ = 73773379 is a prime.

It is a super-2 number, since 2×73773381² = 10885023488342322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73773383) 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, 1117746 + ... + 1117811.

It is an arithmetic number, because the mean of its divisors is an integer number (13413348).

Almost surely, 2^73773381 is an apocalyptic number.

It is an amenable number.

73773381 is a deficient number, since it is larger than the sum of its proper divisors (33533403).

73773381 is a wasteful number, since it uses less digits than its factorization.

73773381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235571.

The product of its digits is 74088, while the sum is 39.

The square root of 73773381 is about 8589.1432052330. The cubic root of 73773381 is about 419.4046383164.

The spelling of 73773381 in words is "seventy-three million, seven hundred seventy-three thousand, three hundred eighty-one".