245206406 has 4 divisors (see below), whose sum is σ = 367809612. Its totient is φ = 122603202.

The previous prime is 245206387. The next prime is 245206411. The reversal of 245206406 is 604602542.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61301600 + ... + 61301603.

It is an arithmetic number, because the mean of its divisors is an integer number (91952403).

Almost surely, 2^245206406 is an apocalyptic number.

245206406 is a deficient number, since it is larger than the sum of its proper divisors (122603206).

245206406 is a wasteful number, since it uses less digits than its factorization.

245206406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122603205.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 245206406 is about 15659.0678522063. The cubic root of 245206406 is about 625.9081462468.

Adding to 245206406 its reverse (604602542), we get a palindrome (849808948).

The spelling of 245206406 in words is "two hundred forty-five million, two hundred six thousand, four hundred six".