613402040 has 16 divisors (see below), whose sum is σ = 1380154680. Its totient is φ = 245360800.

The previous prime is 613401989. The next prime is 613402043. The reversal of 613402040 is 40204316.

It is a happy number.

613402040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613402043) 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, 7667486 + ... + 7667565.

Almost surely, 2^613402040 is an apocalyptic number.

It is an amenable number.

613402040 is an abundant number, since it is smaller than the sum of its proper divisors (766752640).

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

613402040 is a wasteful number, since it uses less digits than its factorization.

613402040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15335062 (or 15335058 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 613402040 is about 24766.9545968010. The cubic root of 613402040 is about 849.6663234695. Note that the first 3 decimals are identical.

Adding to 613402040 its reverse (40204316), we get a palindrome (653606356).

The spelling of 613402040 in words is "six hundred thirteen million, four hundred two thousand, forty".