67921950 has 24 divisors (see below), whose sum is σ = 168446808. Its totient is φ = 18112480.

The previous prime is 67921949. The next prime is 67921951. The reversal of 67921950 is 5912976.

It is an interprime number because it is at equal distance from previous prime (67921949) and next prime (67921951).

It is a super-2 number, since 2×67921950² = 9226782583605000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67921899 and 67921908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67921951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226257 + ... + 226556.

It is an arithmetic number, because the mean of its divisors is an integer number (7018617).

Almost surely, 2^67921950 is an apocalyptic number.

67921950 is an abundant number, since it is smaller than the sum of its proper divisors (100524858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67921950 is a wasteful number, since it uses less digits than its factorization.

67921950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452828 (or 452823 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 67921950 is about 8241.4774160948. The cubic root of 67921950 is about 408.0092870820.

The spelling of 67921950 in words is "sixty-seven million, nine hundred twenty-one thousand, nine hundred fifty".