405612611 has 4 divisors (see below), whose sum is σ = 416575152. Its totient is φ = 394650072.

The previous prime is 405612583. The next prime is 405612643. The reversal of 405612611 is 116216504.

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

It is a cyclic number.

It is not a de Polignac number, because 405612611 - 2⁶ = 405612547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405612671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5481215 + ... + 5481288.

It is an arithmetic number, because the mean of its divisors is an integer number (104143788).

Almost surely, 2^405612611 is an apocalyptic number.

405612611 is a deficient number, since it is larger than the sum of its proper divisors (10962541).

405612611 is a wasteful number, since it uses less digits than its factorization.

405612611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10962540.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 405612611 is about 20139.8264888256. The cubic root of 405612611 is about 740.2364784756.

The spelling of 405612611 in words is "four hundred five million, six hundred twelve thousand, six hundred eleven".