245640702 has 16 divisors (see below), whose sum is σ = 517138560. Its totient is φ = 77570712.

The previous prime is 245640697. The next prime is 245640709. The reversal of 245640702 is 207046542.

245640702 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 245640702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245640709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077258 + ... + 1077485.

It is an arithmetic number, because the mean of its divisors is an integer number (32321160).

Almost surely, 2^245640702 is an apocalyptic number.

245640702 is an abundant number, since it is smaller than the sum of its proper divisors (271497858).

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

245640702 is a wasteful number, since it uses less digits than its factorization.

245640702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154767.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 245640702 is about 15672.9289540915. The cubic root of 245640702 is about 626.2774529103.

The spelling of 245640702 in words is "two hundred forty-five million, six hundred forty thousand, seven hundred two".