867779652 has 48 divisors (see below), whose sum is σ = 2094833664. Its totient is φ = 279300000.

The previous prime is 867779623. The next prime is 867779657. The reversal of 867779652 is 256977768.

It is a super-2 number, since 2×867779652² = 1506083048850482208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 867779592 and 867779601.

It is not an unprimeable number, because it can be changed into a prime (867779657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180277 + ... + 185027.

It is an arithmetic number, because the mean of its divisors is an integer number (43642368).

Almost surely, 2^867779652 is an apocalyptic number.

It is an amenable number.

867779652 is an abundant number, since it is smaller than the sum of its proper divisors (1227054012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

867779652 is a wasteful number, since it uses less digits than its factorization.

867779652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280 (or 5278 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The square root of 867779652 is about 29458.0999387265. The cubic root of 867779652 is about 953.8274589181.

The spelling of 867779652 in words is "eight hundred sixty-seven million, seven hundred seventy-nine thousand, six hundred fifty-two".