67898340 has 72 divisors (see below), whose sum is σ = 218083320. Its totient is φ = 17040384.

The previous prime is 67898317. The next prime is 67898387. The reversal of 67898340 is 4389876.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18870336 + 49028004 = 4344^2 + 7002^2 .

It is a super-2 number, since 2×67898340² = 9220369149511200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8035 + ... + 14154.

It is an arithmetic number, because the mean of its divisors is an integer number (3028935).

Almost surely, 2^67898340 is an apocalyptic number.

67898340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67898340 is an abundant number, since it is smaller than the sum of its proper divisors (150184980).

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

67898340 is a wasteful number, since it uses less digits than its factorization.

67898340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22221 (or 22216 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 67898340 is about 8240.0449027903. The cubic root of 67898340 is about 407.9620062660.

It can be divided in two parts, 6789 and 8340, that added together give a square (15129 = 123²).

The spelling of 67898340 in words is "sixty-seven million, eight hundred ninety-eight thousand, three hundred forty".