913648987 has 8 divisors (see below), whose sum is σ = 953984160. Its totient is φ = 873364800.

The previous prime is 913648963. The next prime is 913649017. The reversal of 913648987 is 789846319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 913648987 - 2¹⁵ = 913616219 is a prime.

It is a super-2 number, since 2×913648987² = 1669508942892252338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913648937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26487 + ... + 50287.

It is an arithmetic number, because the mean of its divisors is an integer number (119248020).

Almost surely, 2^913648987 is an apocalyptic number.

913648987 is a deficient number, since it is larger than the sum of its proper divisors (40335173).

913648987 is a wasteful number, since it uses less digits than its factorization.

913648987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25493.

The product of its digits is 2612736, while the sum is 55.

The square root of 913648987 is about 30226.6271191478. The cubic root of 913648987 is about 970.3456404537.

The spelling of 913648987 in words is "nine hundred thirteen million, six hundred forty-eight thousand, nine hundred eighty-seven".