73701638 has 8 divisors (see below), whose sum is σ = 110701920. Its totient is φ = 36801000.

The previous prime is 73701631. The next prime is 73701643. The reversal of 73701638 is 83610737.

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

It is a junction number, because it is equal to n+sod(n) for n = 73701598 and 73701607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73701631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23033 + ... + 26036.

It is an arithmetic number, because the mean of its divisors is an integer number (13837740).

Almost surely, 2^73701638 is an apocalyptic number.

73701638 is a deficient number, since it is larger than the sum of its proper divisors (37000282).

73701638 is a wasteful number, since it uses less digits than its factorization.

73701638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49822.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 73701638 is about 8584.9658123955. The cubic root of 73701638 is about 419.2686402750.

Subtracting 73701638 from its reverse (83610737), we obtain a palindrome (9909099).

The spelling of 73701638 in words is "seventy-three million, seven hundred one thousand, six hundred thirty-eight".