240580997 has 2 divisors, whose sum is σ = 240580998. Its totient is φ = 240580996.

The previous prime is 240580981. The next prime is 240581017. The reversal of 240580997 is 799085042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240064036 + 516961 = 15494^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 240580997 - 2⁴ = 240580981 is a prime.

It is a super-2 number, since 2×240580997² = 115758432235028018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240580927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120290498 + 120290499.

It is an arithmetic number, because the mean of its divisors is an integer number (120290499).

Almost surely, 2^240580997 is an apocalyptic number.

It is an amenable number.

240580997 is a deficient number, since it is larger than the sum of its proper divisors (1).

240580997 is an equidigital number, since it uses as much as digits as its factorization.

240580997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 240580997 is about 15510.6736475241. The cubic root of 240580997 is about 621.9475672899.

The spelling of 240580997 in words is "two hundred forty million, five hundred eighty thousand, nine hundred ninety-seven".