6245690405 has 4 divisors (see below), whose sum is σ = 7494828492. Its totient is φ = 4996552320.

The previous prime is 6245690303. The next prime is 6245690443. The reversal of 6245690405 is 5040965426.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4795147009 + 1450543396 = 69247^2 + 38086^2 .

It is not a de Polignac number, because 6245690405 - 2¹⁴ = 6245674021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624569036 + ... + 624569045.

It is an arithmetic number, because the mean of its divisors is an integer number (1873707123).

Almost surely, 2^6245690405 is an apocalyptic number.

It is an amenable number.

6245690405 is a deficient number, since it is larger than the sum of its proper divisors (1249138087).

6245690405 is a wasteful number, since it uses less digits than its factorization.

6245690405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249138086.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 6245690405 is about 79029.6805320634. The cubic root of 6245690405 is about 1841.5922737388.

The spelling of 6245690405 in words is "six billion, two hundred forty-five million, six hundred ninety thousand, four hundred five".