688974150629 has 2 divisors, whose sum is σ = 688974150630. Its totient is φ = 688974150628.

The previous prime is 688974150589. The next prime is 688974150649. The reversal of 688974150629 is 926051479886.

688974150629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571392369025 + 117581781604 = 755905^2 + 342902^2 .

It is a cyclic number.

It is not a de Polignac number, because 688974150629 - 2⁸ = 688974150373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688974150649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344487075314 + 344487075315.

It is an arithmetic number, because the mean of its divisors is an integer number (344487075315).

Almost surely, 2^688974150629 is an apocalyptic number.

It is an amenable number.

688974150629 is a deficient number, since it is larger than the sum of its proper divisors (1).

688974150629 is an equidigital number, since it uses as much as digits as its factorization.

688974150629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 688974150629 in words is "six hundred eighty-eight billion, nine hundred seventy-four million, one hundred fifty thousand, six hundred twenty-nine".