647622099 has 6 divisors (see below), whose sum is σ = 935454156. Its totient is φ = 431748060.

The previous prime is 647622091. The next prime is 647622103. The reversal of 647622099 is 990226746.

It is not a de Polignac number, because 647622099 - 2³ = 647622091 is a prime.

It is a super-2 number, since 2×647622099² = 838828766226331602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (647622091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35978997 + ... + 35979014.

It is an arithmetic number, because the mean of its divisors is an integer number (155909026).

Almost surely, 2^647622099 is an apocalyptic number.

647622099 is a deficient number, since it is larger than the sum of its proper divisors (287832057).

647622099 is a wasteful number, since it uses less digits than its factorization.

647622099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71958017 (or 71958014 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 647622099 is about 25448.4203635511. The cubic root of 647622099 is about 865.1814910922.

The spelling of 647622099 in words is "six hundred forty-seven million, six hundred twenty-two thousand, ninety-nine".