69713780 has 18 divisors (see below), whose sum is σ = 146477394. Its totient is φ = 27870576.

The previous prime is 69713773. The next prime is 69713807. The reversal of 69713780 is 8731796.

It can be written as a sum of positive squares in only one way, i.e., 55771024 + 13942756 = 7468^2 + 3734^2 .

It is a super-2 number, since 2×69713780² = 9720022243776800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36407 + ... + 38273.

It is an arithmetic number, because the mean of its divisors is an integer number (8137633).

Almost surely, 2^69713780 is an apocalyptic number.

It is an amenable number.

69713780 is an abundant number, since it is smaller than the sum of its proper divisors (76763614).

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

69713780 is an equidigital number, since it uses as much as digits as its factorization.

69713780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 69713780 is about 8349.4778279842. The cubic root of 69713780 is about 411.5660510897.

The spelling of 69713780 in words is "sixty-nine million, seven hundred thirteen thousand, seven hundred eighty".