746686649 has 2 divisors, whose sum is σ = 746686650. Its totient is φ = 746686648.

The previous prime is 746686639. The next prime is 746686669. The reversal of 746686649 is 946686647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 646786624 + 99900025 = 25432^2 + 9995^2 .

It is a cyclic number.

It is not a de Polignac number, because 746686649 - 2¹² = 746682553 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 746686594 and 746686603.

It is not a weakly prime, because it can be changed into another prime (746686639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373343324 + 373343325.

It is an arithmetic number, because the mean of its divisors is an integer number (373343325).

Almost surely, 2^746686649 is an apocalyptic number.

It is an amenable number.

746686649 is a deficient number, since it is larger than the sum of its proper divisors (1).

746686649 is an equidigital number, since it uses as much as digits as its factorization.

746686649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 56.

The square root of 746686649 is about 27325.5676793731. The cubic root of 746686649 is about 907.2203750095.

The spelling of 746686649 in words is "seven hundred forty-six million, six hundred eighty-six thousand, six hundred forty-nine".