37638061 has 4 divisors (see below), whose sum is σ = 38852224. Its totient is φ = 36423900.

The previous prime is 37638059. The next prime is 37638067. The reversal of 37638061 is 16083673.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16083673 = 1223 ⋅13151.

It is a cyclic number.

It is not a de Polignac number, because 37638061 - 2¹ = 37638059 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 (37638067) 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, 607035 + ... + 607096.

It is an arithmetic number, because the mean of its divisors is an integer number (9713056).

Almost surely, 2^37638061 is an apocalyptic number.

37638061 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

37638061 is a deficient number, since it is larger than the sum of its proper divisors (1214163).

37638061 is a wasteful number, since it uses less digits than its factorization.

37638061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214162.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 37638061 is about 6134.9866340523. The cubic root of 37638061 is about 335.1267390061.

The spelling of 37638061 in words is "thirty-seven million, six hundred thirty-eight thousand, sixty-one".