628831741 has 2 divisors, whose sum is σ = 628831742. Its totient is φ = 628831740.

The previous prime is 628831727. The next prime is 628831769. The reversal of 628831741 is 147138826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546203641 + 82628100 = 23371^2 + 9090^2 .

It is a cyclic number.

It is not a de Polignac number, because 628831741 - 2¹¹ = 628829693 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 628831694 and 628831703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628831141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314415870 + 314415871.

It is an arithmetic number, because the mean of its divisors is an integer number (314415871).

Almost surely, 2^628831741 is an apocalyptic number.

It is an amenable number.

628831741 is a deficient number, since it is larger than the sum of its proper divisors (1).

628831741 is an equidigital number, since it uses as much as digits as its factorization.

628831741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 628831741 is about 25076.5177207682. The cubic root of 628831741 is about 856.7316640986.

The spelling of 628831741 in words is "six hundred twenty-eight million, eight hundred thirty-one thousand, seven hundred forty-one".