709428667 has 2 divisors, whose sum is σ = 709428668. Its totient is φ = 709428666.

The previous prime is 709428641. The next prime is 709428677. The reversal of 709428667 is 766824907.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 709428667 - 2²³ = 701040059 is a prime.

It is a super-2 number, since 2×709428667² = 1006578067122793778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 709428667.

It is not a weakly prime, because it can be changed into another prime (709428677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354714333 + 354714334.

It is an arithmetic number, because the mean of its divisors is an integer number (354714334).

Almost surely, 2^709428667 is an apocalyptic number.

709428667 is a deficient number, since it is larger than the sum of its proper divisors (1).

709428667 is an equidigital number, since it uses as much as digits as its factorization.

709428667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 709428667 is about 26635.1021586177. The cubic root of 709428667 is about 891.8727836933.

The spelling of 709428667 in words is "seven hundred nine million, four hundred twenty-eight thousand, six hundred sixty-seven".