662161995 has 24 divisors (see below), whose sum is σ = 1252089072. Its totient is φ = 321048000.

The previous prime is 662161961. The next prime is 662162003. The reversal of 662161995 is 599161266.

It is a happy number.

662161995 is a `hidden beast` number, since 6 + 6 + 21 + 619 + 9 + 5 = 666.

It is not a de Polignac number, because 662161995 - 2¹⁰ = 662160971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 662161995.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668356 + ... + 669345.

It is an arithmetic number, because the mean of its divisors is an integer number (52170378).

Almost surely, 2^662161995 is an apocalyptic number.

662161995 is a deficient number, since it is larger than the sum of its proper divisors (589927077).

662161995 is a wasteful number, since it uses less digits than its factorization.

662161995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337723 (or 1337720 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 662161995 is about 25732.5085252099. The cubic root of 662161995 is about 871.6084197526.

The spelling of 662161995 in words is "six hundred sixty-two million, one hundred sixty-one thousand, nine hundred ninety-five".