73687001 has 2 divisors, whose sum is σ = 73687002. Its totient is φ = 73687000.

The previous prime is 73686971. The next prime is 73687021. The reversal of 73687001 is 10078637.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 19811401 = 7340^2 + 4451^2 .

It is a cyclic number.

It is not a de Polignac number, because 73687001 - 2²⁶ = 6578137 is a prime.

It is equal to p_4321976 and since 73687001 and 4321976 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (73687021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36843500 + 36843501.

It is an arithmetic number, because the mean of its divisors is an integer number (36843501).

Almost surely, 2^73687001 is an apocalyptic number.

It is an amenable number.

73687001 is a deficient number, since it is larger than the sum of its proper divisors (1).

73687001 is an equidigital number, since it uses as much as digits as its factorization.

73687001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 73687001 is about 8584.1132914239. The cubic root of 73687001 is about 419.2408831289.

The spelling of 73687001 in words is "seventy-three million, six hundred eighty-seven thousand, one".