245690638 has 8 divisors (see below), whose sum is σ = 372114288. Its totient is φ = 121652544.

The previous prime is 245690633. The next prime is 245690671. The reversal of 245690638 is 836096542.

245690638 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 245690594 and 245690603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245690633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596131 + ... + 596542.

It is an arithmetic number, because the mean of its divisors is an integer number (46514286).

Almost surely, 2^245690638 is an apocalyptic number.

245690638 is a deficient number, since it is larger than the sum of its proper divisors (126423650).

245690638 is a wasteful number, since it uses less digits than its factorization.

245690638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192778.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 245690638 is about 15674.5219384835. The cubic root of 245690638 is about 626.3198884291.

The spelling of 245690638 in words is "two hundred forty-five million, six hundred ninety thousand, six hundred thirty-eight".