787013873 has 2 divisors, whose sum is σ = 787013874. Its totient is φ = 787013872.

The previous prime is 787013869. The next prime is 787013881. The reversal of 787013873 is 378310787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 677665024 + 109348849 = 26032^2 + 10457^2 .

It is a cyclic number.

It is not a de Polignac number, because 787013873 - 2² = 787013869 is a prime.

It is not a weakly prime, because it can be changed into another prime (787013813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393506936 + 393506937.

It is an arithmetic number, because the mean of its divisors is an integer number (393506937).

Almost surely, 2^787013873 is an apocalyptic number.

It is an amenable number.

787013873 is a deficient number, since it is larger than the sum of its proper divisors (1).

787013873 is an equidigital number, since it uses as much as digits as its factorization.

787013873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 787013873 is about 28053.7675366429. The cubic root of 787013873 is about 923.2673180946.

The spelling of 787013873 in words is "seven hundred eighty-seven million, thirteen thousand, eight hundred seventy-three".