73687903 has 2 divisors, whose sum is σ = 73687904. Its totient is φ = 73687902.

The previous prime is 73687841. The next prime is 73687921. The reversal of 73687903 is 30978637.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73687903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73687903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73687973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36843951 + 36843952.

It is an arithmetic number, because the mean of its divisors is an integer number (36843952).

Almost surely, 2^73687903 is an apocalyptic number.

73687903 is a deficient number, since it is larger than the sum of its proper divisors (1).

73687903 is an equidigital number, since it uses as much as digits as its factorization.

73687903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 73687903 is about 8584.1658301783. The cubic root of 73687903 is about 419.2425937596.

The spelling of 73687903 in words is "seventy-three million, six hundred eighty-seven thousand, nine hundred three".