70669019 has 4 divisors (see below), whose sum is σ = 70724640. Its totient is φ = 70613400.

The previous prime is 70669013. The next prime is 70669031. The reversal of 70669019 is 91096607.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70669019 - 2²⁰ = 69620443 is a prime.

It is a super-2 number, since 2×70669019² = 9988220492844722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70669013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25859 + ... + 28460.

It is an arithmetic number, because the mean of its divisors is an integer number (17681160).

Almost surely, 2^70669019 is an apocalyptic number.

70669019 is a deficient number, since it is larger than the sum of its proper divisors (55621).

70669019 is a wasteful number, since it uses less digits than its factorization.

70669019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55620.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 70669019 is about 8406.4867215740. The cubic root of 70669019 is about 413.4373302457.

The spelling of 70669019 in words is "seventy million, six hundred sixty-nine thousand, nineteen".