66951137 has 16 divisors (see below), whose sum is σ = 77666688. Its totient is φ = 57108480.

The previous prime is 66951119. The next prime is 66951139. The reversal of 66951137 is 73115966.

It is not a de Polignac number, because 66951137 - 2⁸ = 66950881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66951137.

It is not an unprimeable number, because it can be changed into a prime (66951139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10913 + ... + 15905.

It is an arithmetic number, because the mean of its divisors is an integer number (4854168).

Almost surely, 2^66951137 is an apocalyptic number.

It is an amenable number.

66951137 is a deficient number, since it is larger than the sum of its proper divisors (10715551).

66951137 is a wasteful number, since it uses less digits than its factorization.

66951137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080.

The product of its digits is 34020, while the sum is 38.

The square root of 66951137 is about 8182.3674446947. The cubic root of 66951137 is about 406.0560499999.

The spelling of 66951137 in words is "sixty-six million, nine hundred fifty-one thousand, one hundred thirty-seven".