612750066 has 32 divisors (see below), whose sum is σ = 1250676288. Its totient is φ = 200066880.

The previous prime is 612750049. The next prime is 612750079. The reversal of 612750066 is 660057216.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259905 + ... + 262251.

It is an arithmetic number, because the mean of its divisors is an integer number (39083634).

Almost surely, 2^612750066 is an apocalyptic number.

612750066 is an abundant number, since it is smaller than the sum of its proper divisors (637926222).

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

612750066 is a wasteful number, since it uses less digits than its factorization.

612750066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 612750066 is about 24753.7889221024. The cubic root of 612750066 is about 849.3651850664.

The spelling of 612750066 in words is "six hundred twelve million, seven hundred fifty thousand, sixty-six".