61323877 has 4 divisors (see below), whose sum is σ = 61340620. Its totient is φ = 61307136.

The previous prime is 61323853. The next prime is 61323901. The reversal of 61323877 is 77832316.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61323853) and next prime (61323901).

It can be written as a sum of positive squares in 2 ways, for example, as 17313921 + 44009956 = 4161^2 + 6634^2 .

It is a cyclic number.

It is not a de Polignac number, because 61323877 - 2⁷ = 61323749 is a prime.

It is a super-2 number, since 2×61323877² = 7521235780622258, which contains 22 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 (61323077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252 + ... + 11077.

It is an arithmetic number, because the mean of its divisors is an integer number (15335155).

Almost surely, 2^61323877 is an apocalyptic number.

It is an amenable number.

61323877 is a deficient number, since it is larger than the sum of its proper divisors (16743).

61323877 is a wasteful number, since it uses less digits than its factorization.

61323877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16742.

The product of its digits is 42336, while the sum is 37.

The square root of 61323877 is about 7830.9563272949. The cubic root of 61323877 is about 394.3451779359.

The spelling of 61323877 in words is "sixty-one million, three hundred twenty-three thousand, eight hundred seventy-seven".