61688422 has 8 divisors (see below), whose sum is σ = 93647736. Its totient is φ = 30472512.

The previous prime is 61688401. The next prime is 61688437. The reversal of 61688422 is 22488616.

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

It is a super-2 number, since 2×61688422² = 7610922817700168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185643 + ... + 185974.

It is an arithmetic number, because the mean of its divisors is an integer number (11705967).

Almost surely, 2^61688422 is an apocalyptic number.

61688422 is a deficient number, since it is larger than the sum of its proper divisors (31959314).

61688422 is a wasteful number, since it uses less digits than its factorization.

61688422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371702.

The product of its digits is 36864, while the sum is 37.

The square root of 61688422 is about 7854.1977311499. The cubic root of 61688422 is about 395.1250407955.

The spelling of 61688422 in words is "sixty-one million, six hundred eighty-eight thousand, four hundred twenty-two".