245620645 has 8 divisors (see below), whose sum is σ = 296866080. Its totient is φ = 195082320.

The previous prime is 245620643. The next prime is 245620651. The reversal of 245620645 is 546026542.

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

It is not a de Polignac number, because 245620645 - 2¹ = 245620643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245620645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245620643) 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, 176011 + ... + 177400.

It is an arithmetic number, because the mean of its divisors is an integer number (37108260).

Almost surely, 2^245620645 is an apocalyptic number.

It is an amenable number.

245620645 is a deficient number, since it is larger than the sum of its proper divisors (51245435).

245620645 is a wasteful number, since it uses less digits than its factorization.

245620645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353555.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 245620645 is about 15672.2890797739. The cubic root of 245620645 is about 626.2604068905.

The spelling of 245620645 in words is "two hundred forty-five million, six hundred twenty thousand, six hundred forty-five".