245091966 has 32 divisors (see below), whose sum is σ = 564633600. Its totient is φ = 69473376.

The previous prime is 245091923. The next prime is 245091971. The reversal of 245091966 is 669190542.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17641 + ... + 28308.

It is an arithmetic number, because the mean of its divisors is an integer number (17644800).

Almost surely, 2^245091966 is an apocalyptic number.

245091966 is an abundant number, since it is smaller than the sum of its proper divisors (319541634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245091966 is a wasteful number, since it uses less digits than its factorization.

245091966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46088.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 245091966 is about 15655.4133129726. The cubic root of 245091966 is about 625.8107588042.

The spelling of 245091966 in words is "two hundred forty-five million, ninety-one thousand, nine hundred sixty-six".