674212545 has 32 divisors (see below), whose sum is σ = 1199869440. Its totient is φ = 359199360.

The previous prime is 674212541. The next prime is 674212621. The reversal of 674212545 is 545212476.

It is a happy number.

674212545 is a `hidden beast` number, since 67 + 42 + 12 + 545 = 666.

It is not a de Polignac number, because 674212545 - 2² = 674212541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (674212541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164157 + ... + 168213.

It is an arithmetic number, because the mean of its divisors is an integer number (37495920).

Almost surely, 2^674212545 is an apocalyptic number.

It is an amenable number.

674212545 is a deficient number, since it is larger than the sum of its proper divisors (525656895).

674212545 is a wasteful number, since it uses less digits than its factorization.

674212545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302 (or 5296 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 674212545 is about 25965.6031125795. The cubic root of 674212545 is about 876.8640728199.

The spelling of 674212545 in words is "six hundred seventy-four million, two hundred twelve thousand, five hundred forty-five".