61983415 has 32 divisors (see below), whose sum is σ = 87091200. Its totient is φ = 41938560.

The previous prime is 61983407. The next prime is 61983419. The reversal of 61983415 is 51438916.

It is not a de Polignac number, because 61983415 - 2³ = 61983407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61983419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37476 + ... + 39094.

It is an arithmetic number, because the mean of its divisors is an integer number (2721600).

Almost surely, 2^61983415 is an apocalyptic number.

61983415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61983415 is a deficient number, since it is larger than the sum of its proper divisors (25107785).

61983415 is a wasteful number, since it uses less digits than its factorization.

61983415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687.

The product of its digits is 25920, while the sum is 37.

The square root of 61983415 is about 7872.9546550199. The cubic root of 61983415 is about 395.7538666206.

The spelling of 61983415 in words is "sixty-one million, nine hundred eighty-three thousand, four hundred fifteen".