612526620 has 96 divisors (see below), whose sum is σ = 1761512256. Its totient is φ = 158976000.

The previous prime is 612526619. The next prime is 612526631. The reversal of 612526620 is 26625216.

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 31 ways as a sum of consecutive naturals, for example, 368832 + ... + 370488.

It is an arithmetic number, because the mean of its divisors is an integer number (18349086).

Almost surely, 2^612526620 is an apocalyptic number.

612526620 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 612526620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880756128).

612526620 is an abundant number, since it is smaller than the sum of its proper divisors (1148985636).

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

612526620 is a wasteful number, since it uses less digits than its factorization.

612526620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 612526620 is about 24749.2751409006. The cubic root of 612526620 is about 849.2619290856.

The spelling of 612526620 in words is "six hundred twelve million, five hundred twenty-six thousand, six hundred twenty".