147766457 has 2 divisors, whose sum is σ = 147766458. Its totient is φ = 147766456.

The previous prime is 147766453. The next prime is 147766459. The reversal of 147766457 is 754667741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141395881 + 6370576 = 11891^2 + 2524^2 .

It is an emirp because it is prime and its reverse (754667741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147766457 - 2² = 147766453 is a prime.

Together with 147766459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147766453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73883228 + 73883229.

It is an arithmetic number, because the mean of its divisors is an integer number (73883229).

Almost surely, 2^147766457 is an apocalyptic number.

It is an amenable number.

147766457 is a deficient number, since it is larger than the sum of its proper divisors (1).

147766457 is an equidigital number, since it uses as much as digits as its factorization.

147766457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 47.

The square root of 147766457 is about 12155.9227128178. The cubic root of 147766457 is about 528.6788704717.

The spelling of 147766457 in words is "one hundred forty-seven million, seven hundred sixty-six thousand, four hundred fifty-seven".