612750720 has 128 divisors (see below), whose sum is σ = 2068143840. Its totient is φ = 153780224.

The previous prime is 612750709. The next prime is 612750757. The reversal of 612750720 is 27057216.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 23254 + ... + 42026.

Almost surely, 2^612750720 is an apocalyptic number.

612750720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612750720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034071920).

612750720 is an abundant number, since it is smaller than the sum of its proper divisors (1455393120).

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

612750720 is a wasteful number, since it uses less digits than its factorization.

612750720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18812 (or 18800 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 612750720 is about 24753.8021321978. The cubic root of 612750720 is about 849.3654872475.

The spelling of 612750720 in words is "six hundred twelve million, seven hundred fifty thousand, seven hundred twenty".