61937407 has 4 divisors (see below), whose sum is σ = 70785616. Its totient is φ = 53089200.

The previous prime is 61937389. The next prime is 61937419. The reversal of 61937407 is 70473916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61937407 - 2¹⁵ = 61904639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61937437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4424094 + ... + 4424107.

It is an arithmetic number, because the mean of its divisors is an integer number (17696404).

Almost surely, 2^61937407 is an apocalyptic number.

61937407 is a deficient number, since it is larger than the sum of its proper divisors (8848209).

61937407 is an equidigital number, since it uses as much as digits as its factorization.

61937407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8848208.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 61937407 is about 7870.0322108617. The cubic root of 61937407 is about 395.6559245568.

The spelling of 61937407 in words is "sixty-one million, nine hundred thirty-seven thousand, four hundred seven".