609756420 has 192 divisors, whose sum is σ = 2116348416. Its totient is φ = 127733760.

The previous prime is 609756419. The next prime is 609756437. The reversal of 609756420 is 24657906.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 987952 + ... + 988568.

It is an arithmetic number, because the mean of its divisors is an integer number (11022648).

Almost surely, 2^609756420 is an apocalyptic number.

609756420 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 609756420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058174208).

609756420 is an abundant number, since it is smaller than the sum of its proper divisors (1506591996).

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

609756420 is a wasteful number, since it uses less digits than its factorization.

609756420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 609756420 is about 24693.2464451315. The cubic root of 609756420 is about 847.9797094498.

The spelling of 609756420 in words is "six hundred nine million, seven hundred fifty-six thousand, four hundred twenty".