245296781 has 8 divisors (see below), whose sum is σ = 249225984. Its totient is φ = 241397200.

The previous prime is 245296747. The next prime is 245296813. The reversal of 245296781 is 187692542.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245296781 - 2²⁶ = 178187917 is a prime.

It is a super-2 number, since 2×245296781² = 120341021537923922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245296721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9596 + ... + 24138.

It is an arithmetic number, because the mean of its divisors is an integer number (31153248).

Almost surely, 2^245296781 is an apocalyptic number.

It is an amenable number.

245296781 is a deficient number, since it is larger than the sum of its proper divisors (3929203).

245296781 is a wasteful number, since it uses less digits than its factorization.

245296781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14811.

The product of its digits is 241920, while the sum is 44.

The square root of 245296781 is about 15661.9532945288. The cubic root of 245296781 is about 625.9850331732.

The spelling of 245296781 in words is "two hundred forty-five million, two hundred ninety-six thousand, seven hundred eighty-one".