132778637 has 2 divisors, whose sum is σ = 132778638. Its totient is φ = 132778636.

The previous prime is 132778579. The next prime is 132778643. The reversal of 132778637 is 736877231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96550276 + 36228361 = 9826^2 + 6019^2 .

It is an emirp because it is prime and its reverse (736877231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132778637 - 2⁶ = 132778573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132771637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66389318 + 66389319.

It is an arithmetic number, because the mean of its divisors is an integer number (66389319).

Almost surely, 2^132778637 is an apocalyptic number.

It is an amenable number.

132778637 is a deficient number, since it is larger than the sum of its proper divisors (1).

132778637 is an equidigital number, since it uses as much as digits as its factorization.

132778637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 132778637 is about 11522.9612947367. The cubic root of 132778637 is about 510.1635218305.

The spelling of 132778637 in words is "one hundred thirty-two million, seven hundred seventy-eight thousand, six hundred thirty-seven".