67861073 has 16 divisors (see below), whose sum is σ = 80542080. Its totient is φ = 55942656.

The previous prime is 67861069. The next prime is 67861081. The reversal of 67861073 is 37016876.

It is not a de Polignac number, because 67861073 - 2² = 67861069 is a prime.

It is a super-2 number, since 2×67861073² = 9210250457422658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67861043) 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, 71186 + ... + 72132.

It is an arithmetic number, because the mean of its divisors is an integer number (5033880).

Almost surely, 2^67861073 is an apocalyptic number.

It is an amenable number.

67861073 is a deficient number, since it is larger than the sum of its proper divisors (12681007).

67861073 is a wasteful number, since it uses less digits than its factorization.

67861073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 67861073 is about 8237.7832576489. The cubic root of 67861073 is about 407.8873539623.

The spelling of 67861073 in words is "sixty-seven million, eight hundred sixty-one thousand, seventy-three".