612305505 has 24 divisors (see below), whose sum is σ = 1212948672. Its totient is φ = 279910944.

The previous prime is 612305503. The next prime is 612305539. The reversal of 612305505 is 505503216.

It is not a de Polignac number, because 612305505 - 2¹ = 612305503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612305501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 971599 + ... + 972228.

It is an arithmetic number, because the mean of its divisors is an integer number (50539528).

Almost surely, 2^612305505 is an apocalyptic number.

It is an amenable number.

612305505 is a deficient number, since it is larger than the sum of its proper divisors (600643167).

612305505 is a wasteful number, since it uses less digits than its factorization.

612305505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943845 (or 1943842 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 612305505 is about 24744.8076371590. The cubic root of 612305505 is about 849.1597255536.

The spelling of 612305505 in words is "six hundred twelve million, three hundred five thousand, five hundred five".