73681406 has 8 divisors (see below), whose sum is σ = 110630424. Its totient is φ = 36804600.

The previous prime is 73681381. The next prime is 73681423. The reversal of 73681406 is 60418637.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15425 + ... + 19628.

It is an arithmetic number, because the mean of its divisors is an integer number (13828803).

Almost surely, 2^73681406 is an apocalyptic number.

73681406 is a deficient number, since it is larger than the sum of its proper divisors (36949018).

73681406 is a wasteful number, since it uses less digits than its factorization.

73681406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36106.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 73681406 is about 8583.7873925209. The cubic root of 73681406 is about 419.2302719760.

The spelling of 73681406 in words is "seventy-three million, six hundred eighty-one thousand, four hundred six".