69138037 has 4 divisors (see below), whose sum is σ = 70170016. Its totient is φ = 68106060.

The previous prime is 69137993. The next prime is 69138053. The reversal of 69138037 is 73083196.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69138037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69137987 and 69138005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69108037) 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, 515889 + ... + 516022.

It is an arithmetic number, because the mean of its divisors is an integer number (17542504).

Almost surely, 2^69138037 is an apocalyptic number.

69138037 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

69138037 is a deficient number, since it is larger than the sum of its proper divisors (1031979).

69138037 is a wasteful number, since it uses less digits than its factorization.

69138037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031978.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 69138037 is about 8314.9285625314. The cubic root of 69138037 is about 410.4299218248.

The spelling of 69138037 in words is "sixty-nine million, one hundred thirty-eight thousand, thirty-seven".