672642 has 12 divisors (see below), whose sum is σ = 1457430. Its totient is φ = 224208.

The previous prime is 672641. The next prime is 672643. The reversal of 672642 is 246276.

672642 = 19² + 20² + ... + 126².

It is an interprime number because it is at equal distance from previous prime (672641) and next prime (672643).

It can be written as a sum of positive squares in only one way, i.e., 488601 + 184041 = 699^2 + 429^2 .

It is not an unprimeable number, because it can be changed into a prime (672641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18667 + ... + 18702.

2⁶⁷²⁶⁴² is an apocalyptic number.

672642 is an abundant number, since it is smaller than the sum of its proper divisors (784788).

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

672642 is a wasteful number, since it uses less digits than its factorization.

672642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37377 (or 37374 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 672642 is about 820.1475477010. The cubic root of 672642 is about 87.6182672857.

The spelling of 672642 in words is "six hundred seventy-two thousand, six hundred forty-two".