202666157 has 4 divisors (see below), whose sum is σ = 207609276. Its totient is φ = 197723040.

The previous prime is 202666147. The next prime is 202666169. The reversal of 202666157 is 751666202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51351556 + 151314601 = 7166^2 + 12301^2 .

It is a cyclic number.

It is not a de Polignac number, because 202666157 - 2⁸ = 202665901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202666147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471498 + ... + 2471579.

It is an arithmetic number, because the mean of its divisors is an integer number (51902319).

Almost surely, 2^202666157 is an apocalyptic number.

It is an amenable number.

202666157 is a deficient number, since it is larger than the sum of its proper divisors (4943119).

202666157 is an equidigital number, since it uses as much as digits as its factorization.

202666157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943118.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 202666157 is about 14236.0864355342. The cubic root of 202666157 is about 587.3907152693.

The spelling of 202666157 in words is "two hundred two million, six hundred sixty-six thousand, one hundred fifty-seven".