827607649 has 4 divisors (see below), whose sum is σ = 902844720. Its totient is φ = 752370580.

The previous prime is 827607623. The next prime is 827607659. The reversal of 827607649 is 946706728.

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 827607649 - 2¹⁷ = 827476577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (827607659) 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, 37618519 + ... + 37618540.

It is an arithmetic number, because the mean of its divisors is an integer number (225711180).

Almost surely, 2^827607649 is an apocalyptic number.

It is an amenable number.

827607649 is a deficient number, since it is larger than the sum of its proper divisors (75237071).

827607649 is a wasteful number, since it uses less digits than its factorization.

827607649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75237070.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 827607649 is about 28768.1707621461. The cubic root of 827607649 is about 938.8758437868.

It can be divided in two parts, 82760 and 7649, that added together give a palindrome (90409).

The spelling of 827607649 in words is "eight hundred twenty-seven million, six hundred seven thousand, six hundred forty-nine".