240992661 has 32 divisors (see below), whose sum is σ = 397571328. Its totient is φ = 126443520.

The previous prime is 240992657. The next prime is 240992701. The reversal of 240992661 is 166299042.

240992661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 240992661 - 2² = 240992657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240992611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51541 + ... + 56021.

It is an arithmetic number, because the mean of its divisors is an integer number (12424104).

Almost surely, 2^240992661 is an apocalyptic number.

240992661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240992661 is a deficient number, since it is larger than the sum of its proper divisors (156578667).

240992661 is a wasteful number, since it uses less digits than its factorization.

240992661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 240992661 is about 15523.9383211864. The cubic root of 240992661 is about 622.3021083526.

The spelling of 240992661 in words is "two hundred forty million, nine hundred ninety-two thousand, six hundred sixty-one".