245626740 has 72 divisors (see below), whose sum is σ = 746353608. Its totient is φ = 65387520.

The previous prime is 245626697. The next prime is 245626783. The reversal of 245626740 is 47626542.

245626740 is a `hidden beast` number, since 24 + 5 + 626 + 7 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (245626697) and next prime (245626783).

It can be written as a sum of positive squares in 4 ways, for example, as 144865296 + 100761444 = 12036^2 + 10038^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 245626695 and 245626704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185280 + ... + 186600.

Almost surely, 2^245626740 is an apocalyptic number.

245626740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245626740 is an abundant number, since it is smaller than the sum of its proper divisors (500726868).

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

245626740 is a wasteful number, since it uses less digits than its factorization.

245626740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 245626740 is about 15672.4835300599. The cubic root of 245626740 is about 626.2655870001.

The spelling of 245626740 in words is "two hundred forty-five million, six hundred twenty-six thousand, seven hundred forty".