69999973 has 2 divisors, whose sum is σ = 69999974. Its totient is φ = 69999972.

The previous prime is 69999961. The next prime is 69999989. The reversal of 69999973 is 37999996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45724644 + 24275329 = 6762^2 + 4927^2 .

It is a cyclic number.

It is not a de Polignac number, because 69999973 - 2¹⁷ = 69868901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69999913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34999986 + 34999987.

It is an arithmetic number, because the mean of its divisors is an integer number (34999987).

Almost surely, 2^69999973 is an apocalyptic number.

It is an amenable number.

69999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

69999973 is an equidigital number, since it uses as much as digits as its factorization.

69999973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7440174, while the sum is 61.

The square root of 69999973 is about 8366.5986517820. The cubic root of 69999973 is about 412.1284769929.

The spelling of 69999973 in words is "sixty-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".