672672401 has 2 divisors, whose sum is σ = 672672402. Its totient is φ = 672672400.

The previous prime is 672672361. The next prime is 672672419. The reversal of 672672401 is 104276276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557668225 + 115004176 = 23615^2 + 10724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672672401 is a prime.

It is not a weakly prime, because it can be changed into another prime (672672461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336336200 + 336336201.

It is an arithmetic number, because the mean of its divisors is an integer number (336336201).

Almost surely, 2^672672401 is an apocalyptic number.

It is an amenable number.

672672401 is a deficient number, since it is larger than the sum of its proper divisors (1).

672672401 is an equidigital number, since it uses as much as digits as its factorization.

672672401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 672672401 is about 25935.9287668670. The cubic root of 672672401 is about 876.1958727605.

The spelling of 672672401 in words is "six hundred seventy-two million, six hundred seventy-two thousand, four hundred one".