73745405 has 16 divisors (see below), whose sum is σ = 96934320. Its totient is φ = 53609472.

The previous prime is 73745389. The next prime is 73745407. The reversal of 73745405 is 50454737.

It can be written as a sum of positive squares in 8 ways, for example, as 7778521 + 65966884 = 2789^2 + 8122^2 .

It is a cyclic number.

It is not a de Polignac number, because 73745405 - 2⁴ = 73745389 is a prime.

It is a super-2 number, since 2×73745405² = 10876769517228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73745407) 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, 12494 + ... + 17423.

It is an arithmetic number, because the mean of its divisors is an integer number (6058395).

Almost surely, 2^73745405 is an apocalyptic number.

It is an amenable number.

73745405 is a deficient number, since it is larger than the sum of its proper divisors (23188915).

73745405 is a wasteful number, since it uses less digits than its factorization.

73745405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29968.

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 73745405 is about 8587.5144832483. The cubic root of 73745405 is about 419.3516167186.

The spelling of 73745405 in words is "seventy-three million, seven hundred forty-five thousand, four hundred five".