806749722 has 24 divisors (see below), whose sum is σ = 1850779476. Its totient is φ = 253097856.

The previous prime is 806749717. The next prime is 806749759. The reversal of 806749722 is 227947608.

806749722 is a `hidden beast` number, since 80 + 67 + 497 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 797441121 + 9308601 = 28239^2 + 3051^2 .

It is a super-2 number, since 2×806749722² = 1301690227894154568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1317913 + ... + 1318524.

Almost surely, 2^806749722 is an apocalyptic number.

806749722 is an abundant number, since it is smaller than the sum of its proper divisors (1044029754).

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

806749722 is a wasteful number, since it uses less digits than its factorization.

806749722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636462 (or 2636459 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 806749722 is about 28403.3399796573. The cubic root of 806749722 is about 930.9212446019.

The spelling of 806749722 in words is "eight hundred six million, seven hundred forty-nine thousand, seven hundred twenty-two".