747662381 has 2 divisors, whose sum is σ = 747662382. Its totient is φ = 747662380.

The previous prime is 747662359. The next prime is 747662387. The reversal of 747662381 is 183266747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690901225 + 56761156 = 26285^2 + 7534^2 .

It is a cyclic number.

It is not a de Polignac number, because 747662381 - 2⁶ = 747662317 is a prime.

It is a super-2 number, since 2×747662381² = 1117998071925178322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747662387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373831190 + 373831191.

It is an arithmetic number, because the mean of its divisors is an integer number (373831191).

Almost surely, 2^747662381 is an apocalyptic number.

It is an amenable number.

747662381 is a deficient number, since it is larger than the sum of its proper divisors (1).

747662381 is an equidigital number, since it uses as much as digits as its factorization.

747662381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 747662381 is about 27343.4156790991. The cubic root of 747662381 is about 907.6153727648.

The spelling of 747662381 in words is "seven hundred forty-seven million, six hundred sixty-two thousand, three hundred eighty-one".