665780150 has 48 divisors (see below), whose sum is σ = 1444178400. Its totient is φ = 228261600.

The previous prime is 665780147. The next prime is 665780153. The reversal of 665780150 is 51087566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (665780147) and next prime (665780153).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665780153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2261 + ... + 36560.

It is an arithmetic number, because the mean of its divisors is an integer number (30087050).

Almost surely, 2^665780150 is an apocalyptic number.

665780150 is an abundant number, since it is smaller than the sum of its proper divisors (778398250).

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

665780150 is a wasteful number, since it uses less digits than its factorization.

665780150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38854 (or 38835 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 665780150 is about 25802.7159423189. The cubic root of 665780150 is about 873.1930711493.

The spelling of 665780150 in words is "six hundred sixty-five million, seven hundred eighty thousand, one hundred fifty".