674051220 has 240 divisors, whose sum is σ = 2268604800. Its totient is φ = 167028480.

The previous prime is 674051219. The next prime is 674051221. The reversal of 674051220 is 22150476.

It is an interprime number because it is at equal distance from previous prime (674051219) and next prime (674051221).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674051221) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1877401 + ... + 1877759.

It is an arithmetic number, because the mean of its divisors is an integer number (9452520).

Almost surely, 2^674051220 is an apocalyptic number.

674051220 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 674051220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134302400).

674051220 is an abundant number, since it is smaller than the sum of its proper divisors (1594553580).

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

674051220 is a wasteful number, since it uses less digits than its factorization.

674051220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 674051220 is about 25962.4964130956. The cubic root of 674051220 is about 876.7941288129.

The spelling of 674051220 in words is "six hundred seventy-four million, fifty-one thousand, two hundred twenty".