61820049 has 8 divisors (see below), whose sum is σ = 82652800. Its totient is φ = 41100336.

The previous prime is 61820047. The next prime is 61820051. The reversal of 61820049 is 94002816.

It is an interprime number because it is at equal distance from previous prime (61820047) and next prime (61820051).

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

It is not a de Polignac number, because 61820049 - 2¹ = 61820047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61819998 and 61820025.

It is not an unprimeable number, because it can be changed into a prime (61820047) 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, 26974 + ... + 29175.

It is an arithmetic number, because the mean of its divisors is an integer number (10331600).

Almost surely, 2^61820049 is an apocalyptic number.

It is an amenable number.

61820049 is a deficient number, since it is larger than the sum of its proper divisors (20832751).

61820049 is a wasteful number, since it uses less digits than its factorization.

61820049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56519.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 61820049 is about 7862.5726705704. The cubic root of 61820049 is about 395.4058724034.

The spelling of 61820049 in words is "sixty-one million, eight hundred twenty thousand, forty-nine".