139658064 has 80 divisors (see below), whose sum is σ = 444054912. Its totient is φ = 36831744.

The previous prime is 139658059. The next prime is 139658087. The reversal of 139658064 is 460856931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11619 + ... + 20354.

Almost surely, 2^139658064 is an apocalyptic number.

139658064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139658064 is an abundant number, since it is smaller than the sum of its proper divisors (304396848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139658064 is a wasteful number, since it uses less digits than its factorization.

139658064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32004 (or 31998 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 139658064 is about 11817.7012993221. The cubic root of 139658064 is about 518.8263272989.

The spelling of 139658064 in words is "one hundred thirty-nine million, six hundred fifty-eight thousand, sixty-four".