73704661 has 4 divisors (see below), whose sum is σ = 74267424. Its totient is φ = 73141900.

The previous prime is 73704643. The next prime is 73704671. The reversal of 73704661 is 16640737.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16640737 = 509 ⋅32693.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73704661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73704641) 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, 281185 + ... + 281446.

It is an arithmetic number, because the mean of its divisors is an integer number (18566856).

Almost surely, 2^73704661 is an apocalyptic number.

It is an amenable number.

73704661 is a deficient number, since it is larger than the sum of its proper divisors (562763).

73704661 is a wasteful number, since it uses less digits than its factorization.

73704661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562762.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 73704661 is about 8585.1418741917. The cubic root of 73704661 is about 419.2743725391.

The spelling of 73704661 in words is "seventy-three million, seven hundred four thousand, six hundred sixty-one".