66351436 has 6 divisors (see below), whose sum is σ = 116115020. Its totient is φ = 33175716.

The previous prime is 66351433. The next prime is 66351437. The reversal of 66351436 is 63415366.

It is not an unprimeable number, because it can be changed into a prime (66351431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8293926 + ... + 8293933.

Almost surely, 2^66351436 is an apocalyptic number.

It is an amenable number.

66351436 is a deficient number, since it is larger than the sum of its proper divisors (49763584).

66351436 is a wasteful number, since it uses less digits than its factorization.

66351436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16587863 (or 16587861 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 66351436 is about 8145.6390786727. The cubic root of 66351436 is about 404.8400242026.

The spelling of 66351436 in words is "sixty-six million, three hundred fifty-one thousand, four hundred thirty-six".