69401890 has 8 divisors (see below), whose sum is σ = 124923420. Its totient is φ = 27760752.

The previous prime is 69401887. The next prime is 69401897. The reversal of 69401890 is 9810496.

It can be written as a sum of positive squares in 2 ways, for example, as 69006249 + 395641 = 8307^2 + 629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (69401897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3470085 + ... + 3470104.

Almost surely, 2^69401890 is an apocalyptic number.

69401890 is a deficient number, since it is larger than the sum of its proper divisors (55521530).

69401890 is a wasteful number, since it uses less digits than its factorization.

69401890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940196.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 69401890 is about 8330.7796753965. The cubic root of 69401890 is about 410.9513699386.

The spelling of 69401890 in words is "sixty-nine million, four hundred one thousand, eight hundred ninety".