1674620561 has 8 divisors (see below), whose sum is σ = 1686499584. Its totient is φ = 1662757200.

The previous prime is 1674620551. The next prime is 1674620599. The reversal of 1674620561 is 1650264761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1674620561 - 2¹⁸ = 1674358417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1674620531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283286 + ... + 289136.

It is an arithmetic number, because the mean of its divisors is an integer number (210812448).

Almost surely, 2^1674620561 is an apocalyptic number.

It is an amenable number.

1674620561 is a deficient number, since it is larger than the sum of its proper divisors (11879023).

1674620561 is a wasteful number, since it uses less digits than its factorization.

1674620561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1674620561 is about 40922.1280116272. The cubic root of 1674620561 is about 1187.5141859949.

The spelling of 1674620561 in words is "one billion, six hundred seventy-four million, six hundred twenty thousand, five hundred sixty-one".