61020916 has 12 divisors (see below), whose sum is σ = 116494560. Its totient is φ = 27736760.

The previous prime is 61020907. The next prime is 61020917. The reversal of 61020916 is 61902016.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61020917) 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, 693376 + ... + 693463.

It is an arithmetic number, because the mean of its divisors is an integer number (9707880).

Almost surely, 2^61020916 is an apocalyptic number.

It is an amenable number.

61020916 is a deficient number, since it is larger than the sum of its proper divisors (55473644).

61020916 is a wasteful number, since it uses less digits than its factorization.

61020916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386854 (or 1386852 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 61020916 is about 7811.5885708350. The cubic root of 61020916 is about 393.6947053956.

The spelling of 61020916 in words is "sixty-one million, twenty thousand, nine hundred sixteen".