612610320 has 160 divisors (see below), whose sum is σ = 2178646272. Its totient is φ = 139493376.

The previous prime is 612610291. The next prime is 612610337. The reversal of 612610320 is 23016216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592524 + ... + 593556.

Almost surely, 2^612610320 is an apocalyptic number.

612610320 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 612610320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1089323136).

612610320 is an abundant number, since it is smaller than the sum of its proper divisors (1566035952).

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

612610320 is a wasteful number, since it uses less digits than its factorization.

612610320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409 (or 1403 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 612610320 is about 24750.9660417528. The cubic root of 612610320 is about 849.3006103900.

Adding to 612610320 its reverse (23016216), we get a palindrome (635626536).

The spelling of 612610320 in words is "six hundred twelve million, six hundred ten thousand, three hundred twenty".