61938387 has 12 divisors (see below), whose sum is σ = 102247600. Its totient is φ = 35393328.

The previous prime is 61938353. The next prime is 61938391. The reversal of 61938387 is 78383916.

It is a happy number.

It is not a de Polignac number, because 61938387 - 2⁸ = 61938131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61938337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491512 + ... + 491637.

Almost surely, 2^61938387 is an apocalyptic number.

61938387 is a deficient number, since it is larger than the sum of its proper divisors (40309213).

61938387 is a wasteful number, since it uses less digits than its factorization.

61938387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983162 (or 983159 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 61938387 is about 7870.0944721140. The cubic root of 61938387 is about 395.6580112912.

The spelling of 61938387 in words is "sixty-one million, nine hundred thirty-eight thousand, three hundred eighty-seven".