67939761 has 4 divisors (see below), whose sum is σ = 90586352. Its totient is φ = 45293172.

The previous prime is 67939741. The next prime is 67939777. The reversal of 67939761 is 16793976.

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 not a de Polignac number, because 67939761 - 2¹³ = 67931569 is a prime.

It is a super-2 number, since 2×67939761² = 9231622249474242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67939761.

It is not an unprimeable number, because it can be changed into a prime (67939741) 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, 11323291 + ... + 11323296.

It is an arithmetic number, because the mean of its divisors is an integer number (22646588).

Almost surely, 2^67939761 is an apocalyptic number.

It is an amenable number.

67939761 is a deficient number, since it is larger than the sum of its proper divisors (22646591).

67939761 is a wasteful number, since it uses less digits than its factorization.

67939761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22646590.

The product of its digits is 428652, while the sum is 48.

The square root of 67939761 is about 8242.5579160841. The cubic root of 67939761 is about 408.0449477105.

The spelling of 67939761 in words is "sixty-seven million, nine hundred thirty-nine thousand, seven hundred sixty-one".