69672978 has 12 divisors (see below), whose sum is σ = 150958158. Its totient is φ = 23224320.

The previous prime is 69672973. The next prime is 69672983. The reversal of 69672978 is 87927696.

It is an interprime number because it is at equal distance from previous prime (69672973) and next prime (69672983).

It can be written as a sum of positive squares in only one way, i.e., 69105969 + 567009 = 8313^2 + 753^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69672971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1935343 + ... + 1935378.

Almost surely, 2^69672978 is an apocalyptic number.

69672978 is an abundant number, since it is smaller than the sum of its proper divisors (81285180).

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

69672978 is a wasteful number, since it uses less digits than its factorization.

69672978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870729 (or 3870726 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 69672978 is about 8347.0340840325. The cubic root of 69672978 is about 411.4857417868.

The spelling of 69672978 in words is "sixty-nine million, six hundred seventy-two thousand, nine hundred seventy-eight".