68619492 has 36 divisors (see below), whose sum is σ = 179053056. Its totient is φ = 22134960.

The previous prime is 68619487. The next prime is 68619493. The reversal of 68619492 is 29491686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (68619493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29628 + ... + 31859.

It is an arithmetic number, because the mean of its divisors is an integer number (4973696).

Almost surely, 2^68619492 is an apocalyptic number.

68619492 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

68619492 is an abundant number, since it is smaller than the sum of its proper divisors (110433564).

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

68619492 is a wasteful number, since it uses less digits than its factorization.

68619492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61528 (or 61523 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 68619492 is about 8283.6883089600. The cubic root of 68619492 is about 409.4012517555.

The spelling of 68619492 in words is "sixty-eight million, six hundred nineteen thousand, four hundred ninety-two".