69280913 has 16 divisors (see below), whose sum is σ = 77844480. Its totient is φ = 61217856.

The previous prime is 69280907. The next prime is 69280931. The reversal of 69280913 is 31908296.

It is a cyclic number.

It is not a de Polignac number, because 69280913 - 2¹² = 69276817 is a prime.

It is a super-2 number, since 2×69280913² = 9599689812227138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69280903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47156 + ... + 48602.

It is an arithmetic number, because the mean of its divisors is an integer number (4865280).

Almost surely, 2^69280913 is an apocalyptic number.

It is an amenable number.

69280913 is a deficient number, since it is larger than the sum of its proper divisors (8563567).

69280913 is a wasteful number, since it uses less digits than its factorization.

69280913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 69280913 is about 8323.5156634682. The cubic root of 69280913 is about 410.7124495530.

The spelling of 69280913 in words is "sixty-nine million, two hundred eighty thousand, nine hundred thirteen".