65672450 has 12 divisors (see below), whose sum is σ = 122150850. Its totient is φ = 26268960.

The previous prime is 65672419. The next prime is 65672461. The reversal of 65672450 is 5427656.

It can be written as a sum of positive squares in 3 ways, for example, as 57714409 + 7958041 = 7597^2 + 2821^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65672450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 656675 + ... + 656774.

Almost surely, 2^65672450 is an apocalyptic number.

65672450 is a deficient number, since it is larger than the sum of its proper divisors (56478400).

65672450 is a wasteful number, since it uses less digits than its factorization.

65672450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313461 (or 1313456 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 65672450 is about 8103.8540213901. The cubic root of 65672450 is about 403.4543535635.

The spelling of 65672450 in words is "sixty-five million, six hundred seventy-two thousand, four hundred fifty".