73645801 has 4 divisors (see below), whose sum is σ = 76021504. Its totient is φ = 71270100.

The previous prime is 73645787. The next prime is 73645807. The reversal of 73645801 is 10854637.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73645801 - 2⁹ = 73645289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73645807) 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, 1187805 + ... + 1187866.

It is an arithmetic number, because the mean of its divisors is an integer number (19005376).

Almost surely, 2^73645801 is an apocalyptic number.

It is an amenable number.

73645801 is a deficient number, since it is larger than the sum of its proper divisors (2375703).

73645801 is a wasteful number, since it uses less digits than its factorization.

73645801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375702.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 73645801 is about 8581.7131739531. The cubic root of 73645801 is about 419.1627330060.

The spelling of 73645801 in words is "seventy-three million, six hundred forty-five thousand, eight hundred one".