612988 has 6 divisors (see below), whose sum is σ = 1072736. Its totient is φ = 306492.

The previous prime is 612977. The next prime is 613007. The reversal of 612988 is 889216.

It is a congruent number.

It is an unprimeable number.

612988 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 76620 + ... + 76627.

2⁶¹²⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

612988 is a deficient number, since it is larger than the sum of its proper divisors (459748).

612988 is a wasteful number, since it uses less digits than its factorization.

612988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153251 (or 153249 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 612988 is about 782.9355018135. The cubic root of 612988 is about 84.9475108462.

It can be divided in two parts, 612 and 988, that added together give a square (1600 = 40²).

The spelling of 612988 in words is "six hundred twelve thousand, nine hundred eighty-eight".