73696643 has 4 divisors (see below), whose sum is σ = 73833408. Its totient is φ = 73559880.

The previous prime is 73696633. The next prime is 73696657. The reversal of 73696643 is 34669637.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73696643 - 2⁸ = 73696387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73696594 and 73696603.

It is not an unprimeable number, because it can be changed into a prime (73696633) 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, 67571 + ... + 68652.

It is an arithmetic number, because the mean of its divisors is an integer number (18458352).

Almost surely, 2^73696643 is an apocalyptic number.

73696643 is a deficient number, since it is larger than the sum of its proper divisors (136765).

73696643 is a wasteful number, since it uses less digits than its factorization.

73696643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136764.

The product of its digits is 489888, while the sum is 44.

The square root of 73696643 is about 8584.6748919222. The cubic root of 73696643 is about 419.2591683273.

It can be divided in two parts, 736 and 96643, that added together give a palindrome (97379).

The spelling of 73696643 in words is "seventy-three million, six hundred ninety-six thousand, six hundred forty-three".