670849920 has 576 divisors, whose sum is σ = 2735591040. Its totient is φ = 150405120.

The previous prime is 670849897. The next prime is 670849973. The reversal of 670849920 is 29948076.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21640305 + ... + 21640335.

It is an arithmetic number, because the mean of its divisors is an integer number (4749290).

Almost surely, 2^670849920 is an apocalyptic number.

670849920 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 670849920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367795520).

670849920 is an abundant number, since it is smaller than the sum of its proper divisors (2064741120).

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

670849920 is a wasteful number, since it uses less digits than its factorization.

670849920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 670849920 is about 25900.7706449055. The cubic root of 670849920 is about 875.4038603704.

The spelling of 670849920 in words is "six hundred seventy million, eight hundred forty-nine thousand, nine hundred twenty".