66487051 has 6 divisors (see below), whose sum is σ = 70628420. Its totient is φ = 62575776.

The previous prime is 66487021. The next prime is 66487063. The reversal of 66487051 is 15078466.

It is not a de Polignac number, because 66487051 - 2⁵ = 66487019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66487051.

It is not an unprimeable number, because it can be changed into a prime (66487021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114741 + ... + 115318.

Almost surely, 2^66487051 is an apocalyptic number.

66487051 is a deficient number, since it is larger than the sum of its proper divisors (4141369).

66487051 is a wasteful number, since it uses less digits than its factorization.

66487051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230093 (or 230076 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 66487051 is about 8153.9592223655. The cubic root of 66487051 is about 405.1156525879.

The spelling of 66487051 in words is "sixty-six million, four hundred eighty-seven thousand, fifty-one".