73720097 has 16 divisors (see below), whose sum is σ = 82065984. Its totient is φ = 66211200.

The previous prime is 73720067. The next prime is 73720099. The reversal of 73720097 is 79002737.

It is not a de Polignac number, because 73720097 - 2¹⁴ = 73703713 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (73720099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128822 + ... + 129392.

It is an arithmetic number, because the mean of its divisors is an integer number (5129124).

Almost surely, 2^73720097 is an apocalyptic number.

It is an amenable number.

73720097 is a deficient number, since it is larger than the sum of its proper divisors (8345887).

73720097 is an equidigital number, since it uses as much as digits as its factorization.

73720097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 35.

The square root of 73720097 is about 8586.0408221718. The cubic root of 73720097 is about 419.3036401023.

The spelling of 73720097 in words is "seventy-three million, seven hundred twenty thousand, ninety-seven".