61820914 has 4 divisors (see below), whose sum is σ = 92731374. Its totient is φ = 30910456.

The previous prime is 61820911. The next prime is 61820917. The reversal of 61820914 is 41902816.

It is a happy number.

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 (61820911) and next prime (61820917).

It can be written as a sum of positive squares in only one way, i.e., 53509225 + 8311689 = 7315^2 + 2883^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61820911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15455227 + ... + 15455230.

Almost surely, 2^61820914 is an apocalyptic number.

61820914 is a deficient number, since it is larger than the sum of its proper divisors (30910460).

61820914 is a wasteful number, since it uses less digits than its factorization.

61820914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30910459.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 61820914 is about 7862.6276778187. The cubic root of 61820914 is about 395.4077165974.

The spelling of 61820914 in words is "sixty-one million, eight hundred twenty thousand, nine hundred fourteen".