671527377 has 6 divisors (see below), whose sum is σ = 969984002. Its totient is φ = 447684912.

The previous prime is 671527369. The next prime is 671527427. The reversal of 671527377 is 773725176.

It can be written as a sum of positive squares in only one way, i.e., 671379921 + 147456 = 25911^2 + 384^2 .

It is not a de Polignac number, because 671527377 - 2³ = 671527369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671527327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37307068 + ... + 37307085.

Almost surely, 2^671527377 is an apocalyptic number.

It is an amenable number.

671527377 is a deficient number, since it is larger than the sum of its proper divisors (298456625).

671527377 is a wasteful number, since it uses less digits than its factorization.

671527377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74614159 (or 74614156 counting only the distinct ones).

The product of its digits is 432180, while the sum is 45.

The square root of 671527377 is about 25913.8452762225. The cubic root of 671527377 is about 875.6984364186.

It can be divided in two parts, 67152 and 7377, that added together give a square (74529 = 273²).

The spelling of 671527377 in words is "six hundred seventy-one million, five hundred twenty-seven thousand, three hundred seventy-seven".