612217045 has 48 divisors (see below), whose sum is σ = 838915056. Its totient is φ = 428313600.

The previous prime is 612217019. The next prime is 612217091. The reversal of 612217045 is 540712216.

It can be written as a sum of positive squares in 8 ways, for example, as 201668401 + 410548644 = 14201^2 + 20262^2 .

It is not a de Polignac number, because 612217045 - 2¹⁷ = 612085973 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 47 ways as a sum of consecutive naturals, for example, 1955809 + ... + 1956121.

It is an arithmetic number, because the mean of its divisors is an integer number (17477397).

Almost surely, 2^612217045 is an apocalyptic number.

It is an amenable number.

612217045 is a deficient number, since it is larger than the sum of its proper divisors (226698011).

612217045 is a wasteful number, since it uses less digits than its factorization.

612217045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 612217045 is about 24743.0201268964. The cubic root of 612217045 is about 849.1188307789.

The spelling of 612217045 in words is "six hundred twelve million, two hundred seventeen thousand, forty-five".