65677970 has 32 divisors (see below), whose sum is σ = 125836416. Its totient is φ = 24595200.

The previous prime is 65677957. The next prime is 65677979. The reversal of 65677970 is 7977656.

65677970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65677979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34955 + ... + 36785.

It is an arithmetic number, because the mean of its divisors is an integer number (3932388).

Almost surely, 2^65677970 is an apocalyptic number.

65677970 is a deficient number, since it is larger than the sum of its proper divisors (60158446).

65677970 is a wasteful number, since it uses less digits than its factorization.

65677970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066.

The product of its (nonzero) digits is 555660, while the sum is 47.

The square root of 65677970 is about 8104.1945929253. The cubic root of 65677970 is about 403.4656571651.

The spelling of 65677970 in words is "sixty-five million, six hundred seventy-seven thousand, nine hundred seventy".