672742946 has 8 divisors (see below), whose sum is σ = 1009539180. Its totient is φ = 336229888.

The previous prime is 672742909. The next prime is 672742949. The reversal of 672742946 is 649247276.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 628053721 + 44689225 = 25061^2 + 6685^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 672742946.

It is not an unprimeable number, because it can be changed into a prime (672742949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64751 + ... + 74418.

Almost surely, 2^672742946 is an apocalyptic number.

672742946 is a deficient number, since it is larger than the sum of its proper divisors (336796234).

672742946 is a wasteful number, since it uses less digits than its factorization.

672742946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141588.

The product of its digits is 1016064, while the sum is 47.

The square root of 672742946 is about 25937.2887172118. The cubic root of 672742946 is about 876.2265013780.

The spelling of 672742946 in words is "six hundred seventy-two million, seven hundred forty-two thousand, nine hundred forty-six".