671551276 has 48 divisors (see below), whose sum is σ = 1353058560. Its totient is φ = 288429120.

The previous prime is 671551249. The next prime is 671551277. The reversal of 671551276 is 672155176.

It is a happy number.

It is a super-2 number, since 2×671551276² = 901962232594456352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671551277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419710 + ... + 421306.

It is an arithmetic number, because the mean of its divisors is an integer number (28188720).

Almost surely, 2^671551276 is an apocalyptic number.

It is an amenable number.

671551276 is an abundant number, since it is smaller than the sum of its proper divisors (681507284).

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

671551276 is a wasteful number, since it uses less digits than its factorization.

671551276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 671551276 is about 25914.3063962746. The cubic root of 671551276 is about 875.7088247112.

The spelling of 671551276 in words is "six hundred seventy-one million, five hundred fifty-one thousand, two hundred seventy-six".