67909740 has 24 divisors (see below), whose sum is σ = 190147440. Its totient is φ = 18109248.

The previous prime is 67909729. The next prime is 67909741. The reversal of 67909740 is 4790976.

It is a super-2 number, since 2×67909740² = 9223465573735200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67909692 and 67909701.

It is not an unprimeable number, because it can be changed into a prime (67909741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565855 + ... + 565974.

It is an arithmetic number, because the mean of its divisors is an integer number (7922810).

Almost surely, 2^67909740 is an apocalyptic number.

67909740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67909740 is an abundant number, since it is smaller than the sum of its proper divisors (122237700).

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

67909740 is a wasteful number, since it uses less digits than its factorization.

67909740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131841 (or 1131839 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 67909740 is about 8240.7366175604. The cubic root of 67909740 is about 407.9848369990.

The spelling of 67909740 in words is "sixty-seven million, nine hundred nine thousand, seven hundred forty".