69671057 has 4 divisors (see below), whose sum is σ = 70219776. Its totient is φ = 69122340.

The previous prime is 69671047. The next prime is 69671087. The reversal of 69671057 is 75017696.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69671057 - 2⁸ = 69670801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69671047) 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, 274169 + ... + 274422.

It is an arithmetic number, because the mean of its divisors is an integer number (17554944).

Almost surely, 2^69671057 is an apocalyptic number.

It is an amenable number.

69671057 is a deficient number, since it is larger than the sum of its proper divisors (548719).

69671057 is a wasteful number, since it uses less digits than its factorization.

69671057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548718.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 69671057 is about 8346.9190124261. The cubic root of 69671057 is about 411.4819599697.

The spelling of 69671057 in words is "sixty-nine million, six hundred seventy-one thousand, fifty-seven".