612403145 has 4 divisors (see below), whose sum is σ = 734883780. Its totient is φ = 489922512.

The previous prime is 612403139. The next prime is 612403151. The reversal of 612403145 is 541304216.

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

It is an interprime number because it is at equal distance from previous prime (612403139) and next prime (612403151).

It can be written as a sum of positive squares in 2 ways, for example, as 275460409 + 336942736 = 16597^2 + 18356^2 .

It is a cyclic number.

It is not a de Polignac number, because 612403145 - 2⁶ = 612403081 is a prime.

It is a super-2 number, since 2×612403145² = 750075224011782050, which contains 22 as substring.

It is an unprimeable number.

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, 61240310 + ... + 61240319.

It is an arithmetic number, because the mean of its divisors is an integer number (183720945).

Almost surely, 2^612403145 is an apocalyptic number.

It is an amenable number.

612403145 is a deficient number, since it is larger than the sum of its proper divisors (122480635).

612403145 is a wasteful number, since it uses less digits than its factorization.

612403145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122480634.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 612403145 is about 24746.7804976728. The cubic root of 612403145 is about 849.2048596401.

The spelling of 612403145 in words is "six hundred twelve million, four hundred three thousand, one hundred forty-five".