61992471 has 8 divisors (see below), whose sum is σ = 83251840. Its totient is φ = 41030712.

The previous prime is 61992431. The next prime is 61992481. The reversal of 61992471 is 17429916.

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

It is not a de Polignac number, because 61992471 - 2⁶ = 61992407 is a prime.

It is a super-3 number, since 3×61992471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61992431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73915 + ... + 74748.

It is an arithmetic number, because the mean of its divisors is an integer number (10406480).

Almost surely, 2^61992471 is an apocalyptic number.

61992471 is a deficient number, since it is larger than the sum of its proper divisors (21259369).

61992471 is a wasteful number, since it uses less digits than its factorization.

61992471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148805.

The product of its digits is 27216, while the sum is 39.

The square root of 61992471 is about 7873.5297675185. The cubic root of 61992471 is about 395.7731393701.

The spelling of 61992471 in words is "sixty-one million, nine hundred ninety-two thousand, four hundred seventy-one".