73664450 has 24 divisors (see below), whose sum is σ = 139343760. Its totient is φ = 28965200.

The previous prime is 73664443. The next prime is 73664453. The reversal of 73664450 is 5446637.

It is a self number, because there is not a number n which added to its sum of digits gives 73664450.

It is not an unprimeable number, because it can be changed into a prime (73664453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9536 + ... + 15435.

It is an arithmetic number, because the mean of its divisors is an integer number (5805990).

Almost surely, 2^73664450 is an apocalyptic number.

73664450 is a deficient number, since it is larger than the sum of its proper divisors (65679310).

73664450 is a wasteful number, since it uses less digits than its factorization.

73664450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25042 (or 25037 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 73664450 is about 8582.7996597847. The cubic root of 73664450 is about 419.1981109274.

The spelling of 73664450 in words is "seventy-three million, six hundred sixty-four thousand, four hundred fifty".