70400069 has 2 divisors, whose sum is σ = 70400070. Its totient is φ = 70400068.

The previous prime is 70400063. The next prime is 70400087. The reversal of 70400069 is 96000407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59752900 + 10647169 = 7730^2 + 3263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70400069 is a prime.

It is a super-2 number, since 2×70400069² = 9912339430409522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70400063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35200034 + 35200035.

It is an arithmetic number, because the mean of its divisors is an integer number (35200035).

Almost surely, 2^70400069 is an apocalyptic number.

It is an amenable number.

70400069 is a deficient number, since it is larger than the sum of its proper divisors (1).

70400069 is an equidigital number, since it uses as much as digits as its factorization.

70400069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 70400069 is about 8390.4748971676. The cubic root of 70400069 is about 412.9121810827.

The spelling of 70400069 in words is "seventy million, four hundred thousand, sixty-nine".