72703487 has 2 divisors, whose sum is σ = 72703488. Its totient is φ = 72703486.

The previous prime is 72703469. The next prime is 72703489. The reversal of 72703487 is 78430727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72703487 - 2⁸ = 72703231 is a prime.

Together with 72703489, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 72703487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72703489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36351743 + 36351744.

It is an arithmetic number, because the mean of its divisors is an integer number (36351744).

Almost surely, 2^72703487 is an apocalyptic number.

72703487 is a deficient number, since it is larger than the sum of its proper divisors (1).

72703487 is an equidigital number, since it uses as much as digits as its factorization.

72703487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 72703487 is about 8526.6339783059. The cubic root of 72703487 is about 417.3672940485.

The spelling of 72703487 in words is "seventy-two million, seven hundred three thousand, four hundred eighty-seven".