61906371 has 8 divisors (see below), whose sum is σ = 83096400. Its totient is φ = 40993632.

The previous prime is 61906357. The next prime is 61906421. The reversal of 61906371 is 17360916.

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

It is not a de Polignac number, because 61906371 - 2¹⁷ = 61775299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61906321) 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, 68800 + ... + 69693.

It is an arithmetic number, because the mean of its divisors is an integer number (10387050).

Almost surely, 2^61906371 is an apocalyptic number.

61906371 is a deficient number, since it is larger than the sum of its proper divisors (21190029).

61906371 is a wasteful number, since it uses less digits than its factorization.

61906371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138645.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 61906371 is about 7868.0601802477. The cubic root of 61906371 is about 395.5898275648.

It can be divided in two parts, 6190 and 6371, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 61906371 in words is "sixty-one million, nine hundred six thousand, three hundred seventy-one".