61797923 has 8 divisors (see below), whose sum is σ = 68984256. Its totient is φ = 54873000.

The previous prime is 61797917. The next prime is 61797929. The reversal of 61797923 is 32979716.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61797917) and next prime (61797929).

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

It is a cyclic number.

It is not a de Polignac number, because 61797923 - 2⁸ = 61797667 is a prime.

It is a super-2 number, since 2×61797923² = 7637966574227858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61797929) 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, 64853 + ... + 65798.

It is an arithmetic number, because the mean of its divisors is an integer number (8623032).

Almost surely, 2^61797923 is an apocalyptic number.

61797923 is a deficient number, since it is larger than the sum of its proper divisors (7186333).

61797923 is a wasteful number, since it uses less digits than its factorization.

61797923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130705.

The product of its digits is 142884, while the sum is 44.

The square root of 61797923 is about 7861.1654988303. The cubic root of 61797923 is about 395.3586935651.

The spelling of 61797923 in words is "sixty-one million, seven hundred ninety-seven thousand, nine hundred twenty-three".