86783649 has 4 divisors (see below), whose sum is σ = 115711536. Its totient is φ = 57855764.

The previous prime is 86783639. The next prime is 86783651. The reversal of 86783649 is 94638768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86783649 - 2¹⁶ = 86718113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86783639) 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, 14463939 + ... + 14463944.

It is an arithmetic number, because the mean of its divisors is an integer number (28927884).

Almost surely, 2^86783649 is an apocalyptic number.

It is an amenable number.

86783649 is a deficient number, since it is larger than the sum of its proper divisors (28927887).

86783649 is a wasteful number, since it uses less digits than its factorization.

86783649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28927886.

The product of its digits is 1741824, while the sum is 51.

The square root of 86783649 is about 9315.7742029313. The cubic root of 86783649 is about 442.7371539900.

The spelling of 86783649 in words is "eighty-six million, seven hundred eighty-three thousand, six hundred forty-nine".