69897621 has 8 divisors (see below), whose sum is σ = 97248960. Its totient is φ = 44572352.

The previous prime is 69897617. The next prime is 69897623. The reversal of 69897621 is 12679896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69897621 - 2² = 69897617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69897623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506436 + ... + 506573.

It is an arithmetic number, because the mean of its divisors is an integer number (12156120).

Almost surely, 2^69897621 is an apocalyptic number.

It is an amenable number.

69897621 is a deficient number, since it is larger than the sum of its proper divisors (27351339).

69897621 is a wasteful number, since it uses less digits than its factorization.

69897621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013035.

The product of its digits is 326592, while the sum is 48.

The square root of 69897621 is about 8360.4797111171. The cubic root of 69897621 is about 411.9275114402.

The spelling of 69897621 in words is "sixty-nine million, eight hundred ninety-seven thousand, six hundred twenty-one".