69138770 has 8 divisors (see below), whose sum is σ = 124449804. Its totient is φ = 27655504.

The previous prime is 69138767. The next prime is 69138781. The reversal of 69138770 is 7783196.

It can be written as a sum of positive squares in 2 ways, for example, as 69072721 + 66049 = 8311^2 + 257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×69138770² = 9560339034225800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3456929 + ... + 3456948.

Almost surely, 2^69138770 is an apocalyptic number.

69138770 is a deficient number, since it is larger than the sum of its proper divisors (55311034).

69138770 is a wasteful number, since it uses less digits than its factorization.

69138770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6913884.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 69138770 is about 8314.9726397626. The cubic root of 69138770 is about 410.4313722761.

The spelling of 69138770 in words is "sixty-nine million, one hundred thirty-eight thousand, seven hundred seventy".