526161668 has 6 divisors (see below), whose sum is σ = 920782926. Its totient is φ = 263080832.

The previous prime is 526161637. The next prime is 526161683. The reversal of 526161668 is 866161625.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 451477504 + 74684164 = 21248^2 + 8642^2 .

It is a super-2 number, since 2×526161668² = 553692201745084448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65770205 + ... + 65770212.

It is an arithmetic number, because the mean of its divisors is an integer number (153463821).

Almost surely, 2^526161668 is an apocalyptic number.

It is an amenable number.

526161668 is a deficient number, since it is larger than the sum of its proper divisors (394621258).

526161668 is a wasteful number, since it uses less digits than its factorization.

526161668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131540421 (or 131540419 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 526161668 is about 22938.2141414714. The cubic root of 526161668 is about 807.3088905446.

The spelling of 526161668 in words is "five hundred twenty-six million, one hundred sixty-one thousand, six hundred sixty-eight".