671767470 has 48 divisors (see below), whose sum is σ = 1905379632. Its totient is φ = 162852480.

The previous prime is 671767469. The next prime is 671767471. The reversal of 671767470 is 74767176.

671767470 is a `hidden beast` number, since 6 + 7 + 176 + 7 + 470 = 666.

It is an interprime number because it is at equal distance from previous prime (671767469) and next prime (671767471).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671767471) 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, 338287 + ... + 340266.

It is an arithmetic number, because the mean of its divisors is an integer number (39695409).

Almost surely, 2^671767470 is an apocalyptic number.

671767470 is an abundant number, since it is smaller than the sum of its proper divisors (1233612162).

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

671767470 is a wasteful number, since it uses less digits than its factorization.

671767470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678577 (or 678574 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 671767470 is about 25918.4773858342. The cubic root of 671767470 is about 875.8027875937.

The spelling of 671767470 in words is "six hundred seventy-one million, seven hundred sixty-seven thousand, four hundred seventy".