74728001 has 2 divisors, whose sum is σ = 74728002. Its totient is φ = 74728000.

The previous prime is 74727977. The next prime is 74728019. The reversal of 74728001 is 10082747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66178225 + 8549776 = 8135^2 + 2924^2 .

It is an emirp because it is prime and its reverse (10082747) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74728001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74728021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37364000 + 37364001.

It is an arithmetic number, because the mean of its divisors is an integer number (37364001).

Almost surely, 2^74728001 is an apocalyptic number.

It is an amenable number.

74728001 is a deficient number, since it is larger than the sum of its proper divisors (1).

74728001 is an equidigital number, since it uses as much as digits as its factorization.

74728001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 74728001 is about 8644.5359042577. The cubic root of 74728001 is about 421.2059087947.

The spelling of 74728001 in words is "seventy-four million, seven hundred twenty-eight thousand, one".