66451045 has 16 divisors (see below), whose sum is σ = 85458240. Its totient is φ = 49425664.

The previous prime is 66451027. The next prime is 66451067. The reversal of 66451045 is 54015466.

It is not a de Polignac number, because 66451045 - 2⁵ = 66451013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66450998 and 66451016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2346 + ... + 11764.

It is an arithmetic number, because the mean of its divisors is an integer number (5341140).

Almost surely, 2^66451045 is an apocalyptic number.

It is an amenable number.

66451045 is a deficient number, since it is larger than the sum of its proper divisors (19007195).

66451045 is a wasteful number, since it uses less digits than its factorization.

66451045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 66451045 is about 8151.7510388873. The cubic root of 66451045 is about 405.0425093824.

The spelling of 66451045 in words is "sixty-six million, four hundred fifty-one thousand, forty-five".