61208973 has 48 divisors (see below), whose sum is σ = 107402880. Its totient is φ = 33747840.

The previous prime is 61208969. The next prime is 61208977. The reversal of 61208973 is 37980216.

It is an interprime number because it is at equal distance from previous prime (61208969) and next prime (61208977).

It is not a de Polignac number, because 61208973 - 2² = 61208969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61208977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 181461 + ... + 181797.

It is an arithmetic number, because the mean of its divisors is an integer number (2237560).

Almost surely, 2^61208973 is an apocalyptic number.

61208973 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61208973 is a deficient number, since it is larger than the sum of its proper divisors (46193907).

61208973 is a wasteful number, since it uses less digits than its factorization.

61208973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 61208973 is about 7823.6163632939. The cubic root of 61208973 is about 394.0987259791.

The spelling of 61208973 in words is "sixty-one million, two hundred eight thousand, nine hundred seventy-three".