612257340 has 48 divisors (see below), whose sum is σ = 1724865408. Its totient is φ = 162264384.

The previous prime is 612257339. The next prime is 612257357. The reversal of 612257340 is 43752216.

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

It is a junction number, because it is equal to n+sod(n) for n = 612257298 and 612257307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21522 + ... + 41081.

It is an arithmetic number, because the mean of its divisors is an integer number (35934696).

Almost surely, 2^612257340 is an apocalyptic number.

612257340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612257340 is an abundant number, since it is smaller than the sum of its proper divisors (1112608068).

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

612257340 is a wasteful number, since it uses less digits than its factorization.

612257340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62778 (or 62776 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 612257340 is about 24743.8343835389. The cubic root of 612257340 is about 849.1374595168.

The spelling of 612257340 in words is "six hundred twelve million, two hundred fifty-seven thousand, three hundred forty".