67909923 has 6 divisors (see below), whose sum is σ = 98092124. Its totient is φ = 45273276.

The previous prime is 67909921. The next prime is 67909931. The reversal of 67909923 is 32990976.

It is not a de Polignac number, because 67909923 - 2¹ = 67909921 is a prime.

It is a super-2 number, since 2×67909923² = 9223515283731858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67909921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3772765 + ... + 3772782.

Almost surely, 2^67909923 is an apocalyptic number.

67909923 is a deficient number, since it is larger than the sum of its proper divisors (30182201).

67909923 is a wasteful number, since it uses less digits than its factorization.

67909923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7545553 (or 7545550 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 67909923 is about 8240.7477209292. The cubic root of 67909923 is about 407.9852034715.

The spelling of 67909923 in words is "sixty-seven million, nine hundred nine thousand, nine hundred twenty-three".