66200157 has 6 divisors (see below), whose sum is σ = 95622462. Its totient is φ = 44133432.

The previous prime is 66200153. The next prime is 66200171. The reversal of 66200157 is 75100266.

It can be written as a sum of positive squares in only one way, i.e., 47485881 + 18714276 = 6891^2 + 4326^2 .

It is not a de Polignac number, because 66200157 - 2² = 66200153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66200157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66200153) 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, 3677778 + ... + 3677795.

It is an arithmetic number, because the mean of its divisors is an integer number (15937077).

Almost surely, 2^66200157 is an apocalyptic number.

It is an amenable number.

66200157 is a deficient number, since it is larger than the sum of its proper divisors (29422305).

66200157 is a wasteful number, since it uses less digits than its factorization.

66200157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355579 (or 7355576 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 66200157 is about 8136.3478907923. The cubic root of 66200157 is about 404.5321162841.

The spelling of 66200157 in words is "sixty-six million, two hundred thousand, one hundred fifty-seven".