787047487 has 4 divisors (see below), whose sum is σ = 833344416. Its totient is φ = 740750560.

The previous prime is 787047467. The next prime is 787047493. The reversal of 787047487 is 784740787.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784740787 = 21839 ⋅35933.

It is a cyclic number.

It is not a de Polignac number, because 787047487 - 2²³ = 778658879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787047407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23148439 + ... + 23148472.

It is an arithmetic number, because the mean of its divisors is an integer number (208336104).

Almost surely, 2^787047487 is an apocalyptic number.

787047487 is a deficient number, since it is larger than the sum of its proper divisors (46296929).

787047487 is a wasteful number, since it uses less digits than its factorization.

787047487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46296928.

The product of its (nonzero) digits is 2458624, while the sum is 52.

The square root of 787047487 is about 28054.3666298136. The cubic root of 787047487 is about 923.2804624058.

The spelling of 787047487 in words is "seven hundred eighty-seven million, forty-seven thousand, four hundred eighty-seven".