670691550 has 48 divisors (see below), whose sum is σ = 1665451440. Its totient is φ = 178621440.

The previous prime is 670691537. The next prime is 670691557. The reversal of 670691550 is 55196076.

It is a junction number, because it is equal to n+sod(n) for n = 670691499 and 670691508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670691557) 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, 136944 + ... + 141756.

It is an arithmetic number, because the mean of its divisors is an integer number (34696905).

Almost surely, 2^670691550 is an apocalyptic number.

670691550 is an abundant number, since it is smaller than the sum of its proper divisors (994759890).

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

670691550 is a wasteful number, since it uses less digits than its factorization.

670691550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757 (or 5752 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 670691550 is about 25897.7132195103. The cubic root of 670691550 is about 875.3349683494.

The spelling of 670691550 in words is "six hundred seventy million, six hundred ninety-one thousand, five hundred fifty".