70625669 has 2 divisors, whose sum is σ = 70625670. Its totient is φ = 70625668.

The previous prime is 70625647. The next prime is 70625677. The reversal of 70625669 is 96652607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59985025 + 10640644 = 7745^2 + 3262^2 .

It is an emirp because it is prime and its reverse (96652607) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70625669 is a prime.

It is a super-2 number, since 2×70625669² = 9975970243395122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70624669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35312834 + 35312835.

It is an arithmetic number, because the mean of its divisors is an integer number (35312835).

Almost surely, 2^70625669 is an apocalyptic number.

It is an amenable number.

70625669 is a deficient number, since it is larger than the sum of its proper divisors (1).

70625669 is an equidigital number, since it uses as much as digits as its factorization.

70625669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 70625669 is about 8403.9079599910. The cubic root of 70625669 is about 413.3527756348.

The spelling of 70625669 in words is "seventy million, six hundred twenty-five thousand, six hundred sixty-nine".