662681131 has 16 divisors (see below), whose sum is σ = 802630080. Its totient is φ = 534113280.

The previous prime is 662681119. The next prime is 662681147. The reversal of 662681131 is 131186266.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 662681131 - 2¹⁹ = 662156843 is a prime.

It is a super-2 number, since 2×662681131² = 878292562766878322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (662681161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189741 + ... + 193201.

It is an arithmetic number, because the mean of its divisors is an integer number (50164380).

Almost surely, 2^662681131 is an apocalyptic number.

662681131 is a deficient number, since it is larger than the sum of its proper divisors (139948949).

662681131 is a wasteful number, since it uses less digits than its factorization.

662681131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094.

The product of its digits is 10368, while the sum is 34.

The square root of 662681131 is about 25742.5937115901. The cubic root of 662681131 is about 871.8361410223.

The spelling of 662681131 in words is "six hundred sixty-two million, six hundred eighty-one thousand, one hundred thirty-one".