61692891 has 8 divisors (see below), whose sum is σ = 88584720. Its totient is φ = 37964832.

The previous prime is 61692871. The next prime is 61692893. The reversal of 61692891 is 19829616.

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

It is not a de Polignac number, because 61692891 - 2¹⁰ = 61691867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61692893) 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, 790896 + ... + 790973.

It is an arithmetic number, because the mean of its divisors is an integer number (11073090).

Almost surely, 2^61692891 is an apocalyptic number.

61692891 is a deficient number, since it is larger than the sum of its proper divisors (26891829).

61692891 is a wasteful number, since it uses less digits than its factorization.

61692891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581885.

The product of its digits is 46656, while the sum is 42.

The square root of 61692891 is about 7854.4822235460. The cubic root of 61692891 is about 395.1345821384.

The spelling of 61692891 in words is "sixty-one million, six hundred ninety-two thousand, eight hundred ninety-one".