66477345 has 32 divisors (see below), whose sum is σ = 119180160. Its totient is φ = 31357440.

The previous prime is 66477311. The next prime is 66477349. The reversal of 66477345 is 54377466.

It is a happy number.

It is not a de Polignac number, because 66477345 - 2⁹ = 66476833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66477297 and 66477306.

It is not an unprimeable number, because it can be changed into a prime (66477349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661 + ... + 11549.

It is an arithmetic number, because the mean of its divisors is an integer number (3724380).

Almost surely, 2^66477345 is an apocalyptic number.

It is an amenable number.

66477345 is a deficient number, since it is larger than the sum of its proper divisors (52702815).

66477345 is a wasteful number, since it uses less digits than its factorization.

66477345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10945.

The product of its digits is 423360, while the sum is 42.

The square root of 66477345 is about 8153.3640296506. The cubic root of 66477345 is about 405.0959382535.

The spelling of 66477345 in words is "sixty-six million, four hundred seventy-seven thousand, three hundred forty-five".